Document:

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                                                                   EXHIBIT 10.25

                    PATENT AND TRADEMARK SECURITY AGREEMENT

          THIS PATENT AND TRADEMARK SECURITY AGREEMENT (this "Agreement"), dated
as of March 16, 2000, is made between Amerigon Incorporated, a California
corporation ("Borrower"), and Big Star Investments LLC ("Lender").

          Borrower and Lender are parties to a Security Agreement dated as of
March __, 2000 (as amended, modified, renewed or extended from time to time, the
"Security Agreement"), which Security Agreement provides, among other things,
for the grant by Borrower to Lender of a security interest in, certain of
Borrower's property and assets, including, without limitation, its patents and
patent applications, its trademarks, service marks and trade names, and its
applications for registration of such trademarks, service marks and trade names.
Pursuant to the Security Agreement, Borrower has agreed to execute and deliver
this Agreement to Lender for filing with the United States Patent and Trademark
Office (the "PTO") (and any other relevant recording systems in any domestic or
foreign jurisdiction), and as further evidence of and to effectuate such
assignment of and grant of a security interest in such patents and patent
applications, trademarks, service marks and trade names, and applications for
registration of such trademarks, service marks and trade names, and the other
general intangibles described herein.  Accordingly, Borrower and Lender hereby
agree as follows:

          SECTION 1.  DEFINITIONS; INTERPRETATION.

          (a)  All capitalized terms used in this Agreement and not otherwise
defined herein shall have the meanings assigned to them in the Security
Agreement.

          (b)  In this Agreement, (i) the meaning of defined terms shall be
equally applicable to both the singular and plural forms of the terms defined;
and (ii) the captions and headings are for convenience of reference only and
shall not affect the construction of this Agreement.

          SECTION 2.  ASSIGNMENT AND GRANT OF SECURITY INTEREST.

          (a)  As security for the payment and performance of the Secured
Obligations (as defined in the Security Agreement), Borrower hereby assigns,
transfers and conveys and grants a security interest in and mortgage to Lender,
for security purposes, all of Borrower's right, title and interest in, to and
under the following property, whether now existing or owned or hereafter
acquired, developed or arising (collectively, the "Intellectual Property
Collateral"):

               (i)  all patents and patent applications, domestic or foreign,
all licenses relating to any of the foregoing and all income and royalties with
respect to any licenses (including, without limitation, such patents and patent
applications as described in SCHEDULE A hereto), all rights to sue for past,
present or future infringement thereof, all rights arising therefrom and
pertaining thereto and all reissues, reexaminations, divisions, continuations,
renewals, extensions and continuations-in-part thereof;
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               (ii)   all state (including common law), federal and foreign
trademarks, service marks and trade names, and applications for registration of
such trademarks, service marks and trade names, all licenses relating to any of
the foregoing and all income and royalties with respect to any licenses
(including, without limitation, such marks, names and applications as described
in SCHEDULE B hereto), whether registered or unregistered and wherever
registered, all rights to sue for past, present or future infringement or
unconsented use thereof, all rights arising therefrom and pertaining thereto and
all reissues, extensions and renewals thereof;

               (iii)  the entire goodwill of or associated with the businesses
now or hereafter conducted by Borrower connected with and symbolized by any of
the aforementioned properties and assets;

               (iv)   all general intangibles (as defined in the UCC) and all
intangible intellectual or other similar property of the Borrower of any kind or
nature, associated with or arising out of any of the aforementioned properties
and assets and not otherwise described above; and

               (v)    all products and proceeds of any and all of the foregoing.

          (b)  This Agreement shall create a continuing security interest in the
Intellectual Property Collateral which shall remain in effect until terminated
in accordance with Section 17 hereof.

          SECTION 3.  FURTHER ASSURANCES; APPOINTMENT OF LENDER AS ATTORNEY-IN-
FACT.  Borrower at its expense shall execute and deliver, or cause to be
executed and delivered, to Lender any and all documents and instruments, in form
and substance satisfactory to Lender, and take any and all action, which Lender
may reasonably request from time to time, to perfect and continue perfected,
maintain the priority of or provide notice of Lender's security interest in the
Intellectual Property Collateral and to accomplish the purposes of this
Agreement. Lender shall have the right to, in the name of the Borrower, or in
the name of Lender or otherwise, without notice to or assent by the Borrower,
and the Borrower hereby irrevocably constitutes and appoints Lender (and any of
Lender's officers or employees or agents designated by Lender) as the Borrower's
true and lawful attorney-in-fact with full power and authority, (i) to sign the
name of the Borrower on all or any of such documents or instruments and perform
all other acts that Lender deems necessary or advisable in order to perfect or
continue perfected, maintain the priority or enforceability of or provide notice
of Lender's security interest in, the Intellectual Property Collateral, and (ii)
to execute any and all other documents and instruments, and to perform any and
all acts and things for and on behalf of the Borrower, which Lender may deem
necessary or advisable to maintain, preserve and protect the Intellectual
Property Collateral and to accomplish the purposes of this Agreement, including
(A) to defend, settle, adjust or (after the occurrence and during the
continuance of any Event of Default) institute any action, suit or proceeding
with respect to the Intellectual Property Collateral, and, after the occurrence
and during the continuance of any Event of Default, (B) to assert or retain any
rights under any license agreement for any of the Intellectual Property
Collateral, including without limitation any rights of the Borrower arising
under Section 365(n) of the Bankruptcy Code, and (C) after the occurrence and
during the continuance of any Event of Default, to execute any and all
applications, documents, papers and instruments for Lender to use

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the Intellectual Property Collateral, to grant or issue any exclusive or non-
exclusive license or sub-license with respect to any Intellectual Property
Collateral, and to assign, convey or otherwise transfer title in or dispose of
the Intellectual Property Collateral; PROVIDED, HOWEVER, that in no event shall
Lender have the unilateral power, prior to the occurrence and continuation of an
Event of Default, to assign any of the Intellectual Property Collateral to any
Person, including themselves, without the Borrower's written consent. The
foregoing shall in no way limit Lender's rights and remedies upon or after the
occurrence and during the continuance of an Event of Default. The power of
attorney set forth in this Section 3, being coupled with an interest, is
irrevocable, so long as this Agreement shall not have terminated in accordance
with Section 17.

          SECTION 4.  FUTURE RIGHTS.  Except as otherwise expressly agreed to in
writing by Lender, if and when the Borrower shall obtain rights to any new
patentable inventions or any new trademarks, or become entitled to the benefit
of any of the foregoing, or obtain rights or benefits with respect to any
reissue, division, continuation, renewal, extension or continuation-in-part of
any patents or trademarks or, or any improvement of any patent, the provisions
of Section 2 shall automatically apply thereto and the Borrower shall give to
Lender prompt notice thereof. Borrower shall do all things deemed necessary or
advisable by Lender to ensure the validity, perfection, priority and
enforceability of the security interests of Lender in such future acquired
Intellectual Property Collateral. Borrower hereby authorizes Lender to modify,
amend, or supplement the Schedules hereto and to reexecute this Agreement from
time to time on Borrower's behalf and as its attorney-in-fact to include any
such future Intellectual Property Collateral and to cause such reexecuted
Agreement or such modified, amended or supplemented Schedules to be filed with
PTO.

          SECTION 5.  LENDER'S DUTIES.  Notwithstanding any provision contained
in this Agreement, Lender shall have no duty to exercise any of the rights,
privileges or powers afforded to it and shall not be responsible to the Borrower
or any other Person for any failure to do so or delay in doing so. Except for
the accounting for moneys actually received by Lender hereunder or in connection
herewith, Lender shall have no duty or liability to exercise or preserve any
rights, privileges or powers pertaining to the Intellectual Property Collateral.

          SECTION 6.  REPRESENTATIONS AND WARRANTIES.  Borrower represents and
warrants to Lender that:

          (a)  A true and correct list of all of the existing Intellectual
Property Collateral consisting of United States patents and patent applications
and/or registrations owned by the Borrower, in whole or in part, is set forth in
SCHEDULE A.

          (b)  A true and correct list of all of the existing Intellectual
Property Collateral consisting of United States trademarks, trademark
registrations and/or applications owned by the Borrower, in whole or in part, is
set forth in SCHEDULE B.

          (c)  All material patents, trademarks, service marks and trade names
of Borrower are subsisting and have not been adjudged invalid or unenforceable
in whole or in part.

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          (d)  All maintenance fees at the large entity rate required to be paid
on account of any patents or trademarks of Borrower have been timely paid for
maintaining such patents and trademarks in force, and, to the best of Borrower's
knowledge, each of the patents and trademarks constituting part of the
Intellectual Property Collateral is valid and enforceable in all material
respects.

          (e)  To the best of Borrower's knowledge after due inquiry, no
material infringement or unauthorized use presently is being made of any
Intellectual Property Collateral by any Person.

          (f)  Borrower is the sole and exclusive owner of the Intellectual
Property Collateral and the past, present and contemplated future use of such
Intellectual Property Collateral by Borrower has not, does not and will not
infringe or violate any right, privilege or license agreement of or with any
other Person, in any material respect.

          SECTION 7.  COVENANTS.

          (a)  Borrower will appear in and defend any action, suit or proceeding
which may affect to a material extent its title to, or Lender's rights or
interest in, the Intellectual Property Collateral.

          (b)  Borrower will not allow or suffer any material Intellectual
Property Collateral to become abandoned, nor any registration thereof to be
terminated, forfeited, expired or dedicated to the public.

          (c)  Borrower will diligently prosecute all applications for patents
and trademarks, and file and prosecute any and all continuations, continuations-
in-part, applications for reissue, applications for certificate of correction
and like matters as shall be reasonable and appropriate in accordance with
prudent business practice, and promptly pay any and all maintenance, license,
registration and other fees, taxes and expenses incurred in connection with any
Intellectual Property Collateral.

          SECTION 8.  LENDER'S RIGHTS AND REMEDIES.

          (a)  Lender shall have all rights and remedies available to it under
the Security Agreement, the other Loan Documents and applicable law with respect
to the security interests in any of the Intellectual Property Collateral or any
other collateral. Borrower agrees that such rights and remedies include, but are
not limited to, the right of Lender as a secured party to sell or otherwise
dispose of its collateral after default pursuant to the UCC. Borrower agrees
that Lender shall at all times have such royalty free licenses, to the extent
permitted by law and Borrower's existing contracts, for any Intellectual
Property Collateral that shall be reasonably necessary to permit the exercise of
any of Lender's rights or remedies upon or after the occurrence and during the
continuance of an Event of Default and shall additionally, effective upon or
after the occurrence and during the continuance of an Event of Default, have the
right to license and/or sublicense any Intellectual Property Collateral, whether
general, special or otherwise, and whether on an exclusive or a nonexclusive
basis, any of the Intellectual Property Collateral, throughout the world for
such term or terms, on such conditions, and in such manner, as Lender in its
discretion shall determine. In addition to and without limiting any of the

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foregoing, upon the occurrence and during the continuance of an Event of
Default, Lender shall have the right but shall in no way be obligated to bring
suit, or to take such other action as Lender deems necessary or advisable, in
the name of the Borrower or Lender, to enforce or protect any of the
Intellectual Property Collateral, in which event the Borrower shall, at the
request of Lender, do any and all lawful acts and execute any and all documents
required by Lender in aid of such enforcement. To the extent that Lender shall
elect not to bring suit to enforce such Intellectual Property Collateral,
Borrower agrees to use all reasonable measures and its diligent efforts, whether
by action, suit, proceeding or otherwise, to prevent the infringement,
misappropriation or violations thereof in any material respect by others and for
that purpose agrees diligently to maintain any action, suit or proceeding
against any Person necessary to prevent such infringement, misappropriation or
violation.

          (b)  The cash proceeds actually received from the sale or other
disposition or collection of Intellectual Property Collateral, and any other
amounts received in respect of the Intellectual Property Collateral the
application of which is not otherwise provided for herein, shall be applied as
provided in the Security Agreement.

          SECTION 9.  NOTICES.  All notices or other communications hereunder
shall be in writing (including by facsimile transmission) shall be mailed, sent
or delivered in accordance with the Security Agreement at or to their respective
addresses or facsimile numbers set forth below their names on the signature
pages hereof, or at or to such other address or facsimile number as shall be
designated by any party in a written notice to the other parties hereto. All
such notices and other communications shall be effective as provided in the
Security Agreement.

          SECTION 10.  NO WAIVER; CUMULATIVE REMEDIES.  No failure on the part
of Lender to exercise, and no delay in exercising, any right, remedy, power or
privilege hereunder shall operate as a waiver thereof, nor shall any single or
partial exercise of any such right, remedy, power or privilege preclude any
other or further exercise thereof or the exercise of any other right, remedy,
power or privilege. The rights and remedies under this Agreement are cumulative
and not exclusive of any rights, remedies, powers and privileges that may
otherwise be available to Lender.

          SECTION 11.  COSTS AND EXPENSES; INDEMNITY.

          (a)  Borrower agrees to pay on demand all costs and expenses of
Lender, including without limitation all reasonable attorneys' fees, in
connection with the enforcement or attempted enforcement of, and preservation of
any rights or interests under, this Agreement, and the assignment, sale or other
disposal of any of the Intellectual Property Collateral.

          (b)  Borrower hereby agrees to indemnify Lender and any of its
affiliates, and their respective directors, officers, employees, agents, counsel
and other advisors (each an "Indemnified Person") against, and hold each of them
harmless from, any and all liabilities, obligations, losses, claims, damages,
penalties, actions, judgments, suits, costs, expenses or disbursements of any
kind or nature whatsoever, including, without limitation, reasonable attorneys'
fees and attorneys' fees incurred pursuant to Chapter 11 United States Code,
which may be imposed on, incurred by, or asserted against any Indemnified
Person, in any way relating

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to or arising out of this Agreement, including in connection with any
infringement or alleged infringement with respect to any Intellectual Property
Collateral, or any action taken or omitted to be taken by it hereunder (the
"Indemnified Liabilities"); PROVIDED that Borrower shall not be liable to any
Indemnified Person for any portion of such Indemnified Liabilities to the extent
they are found by a final decision of a court of competent jurisdiction to have
resulted from such Indemnified Person's gross negligence or willful misconduct.
If and to the extent that the foregoing indemnification is for any reason held
unenforceable, Borrower agrees to make the maximum contribution to the payment
and satisfaction of each of the Indemnified Liabilities which is permissible
under applicable law.

          (c)  Any amounts payable to Lender under this Section 11 or otherwise
under this Agreement if not paid upon demand shall bear interest from the date
of such demand until paid in full, at the rate of interest set forth in the
Note.

          SECTION 12.  BINDING EFFECT.  This Agreement shall be binding upon,
inure to the benefit of and be enforceable by Borrower, Lender and their
respective successors and assigns.

          SECTION 13.  GOVERNING LAW.  This Agreement shall be governed by, and
construed in accordance with, the law of the State of California, except to the
extent that the validity or perfection of the assignment and security interests
hereunder in respect of any Intellectual Property Collateral are governed by
federal law and except to the extent that Lender shall have greater rights or
remedies under federal law, in which case such choice of California law shall
not be deemed to deprive Lender of such rights and remedies as may be available
under federal law.

          SECTION 14.  AMENDMENT.  No amendment to this Agreement, or any waiver
of any provision hereof, shall be effective unless it is in writing and signed
by Lender and (in the case of any amendment) the Borrower.

          SECTION 15.  SEVERABILITY.  Whenever possible, each provision of this
Agreement shall be interpreted in such manner as to be effective and valid under
all applicable laws and regulations. If, however, any provision of this
Agreement shall be prohibited by or invalid under any such law or regulation in
any jurisdiction, it shall, as to such jurisdiction, be deemed modified to
conform to the minimum requirements of such law or regulation, or, if for any
reason it is not deemed so modified, it shall be ineffective and invalid only to
the extent of such prohibition or invalidity without affecting the remaining
provisions of this Agreement, or the validity or effectiveness of such provision
in any other jurisdiction.

          SECTION 16.  COUNTERPARTS.  This Agreement may be executed in any
number of counterparts and by different parties hereto in separate counterparts,
each of which when so executed shall be deemed to be an original and all of
which taken together shall constitute one and the same agreement.

          SECTION 17.  TERMINATION.  Upon payment and performance in full of all
Secured Obligations, this Agreement shall terminate and Lender shall promptly
execute and deliver to Borrower such documents and instruments reasonably
requested by Borrower as shall

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be necessary to evidence termination of all security interests given by Borrower
to Lender hereunder, including cancellation of this Agreement by written notice
from Lender to the PTO; PROVIDED, HOWEVER, that (i)the obligations of Borrower
under Section 11 hereof shall survive such termination and (ii) in the event a
voluntary proceeding in bankruptcy is filed by Borrower or an involuntary
proceeding in bankruptcy is filed against Borrower, this Agreement and Lender's
interest in the Intellectual Property Collateral created hereby shall survive
such proceeding.

          SECTION 18.  SECURITY AGREEMENT.  Borrower acknowledges that the
rights and remedies of Lender with respect to the security interests in the
Intellectual Property Collateral granted hereby are more fully set forth in the
Security Agreement and the other Loan Documents and all such rights and remedies
are cumulative.

          SECTION 19.  NO INCONSISTENT REQUIREMENTS.  Borrower acknowledges that
this Agreement and the Security Agreement may contain covenants and other terms
and provisions variously stated regarding the same or similar matters, and the
Borrower agrees that all such covenants, terms and provisions are cumulative and
all shall be performed and satisfied in accordance with their respective terms.

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          IN WITNESS WHEREOF, the parties hereto have duly executed this Patent
and Trademark Security Agreement, as of the date first above written.

                                     BORROWER:

                                     AMERIGON INCORPORATED, a California
                                     corporation

                                     By ____________________________
                                          Name:_____________________
                                          Title:____________________

                                     Address:

                                     _______________________________________

                                     _______________________________________
                                     Attn: _________________________________
                                     Fax: __________________________________

                                     LENDER:

                                     BIG STAR INVESTMENTS LLC

                                     By ____________________________
                                          Name:_____________________
                                          Title:____________________

                                     Address:

                                     _______________________________________

                                     _______________________________________
                                     Attn:__________________________________
                                     Fax: __________________________________

                                       8<PAGE>

                                                                   EXHIBIT 10.26

                              BRIDGE LOAN WARRANT

THIS SECURITY AND ANY SHARES ISSUED UPON EXERCISE OF THIS SECURITY HAVE NOT BEEN
REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE "ACT"), OR
APPLICABLE STATE SECURITIES LAWS AND MAY NOT BE TRANSFERRED OR OTHERWISE
DISPOSED OF UNLESS THE APPLICABLE SECURITY HAS BEEN REGISTERED UNDER THE ACT AND
SUCH LAWS OR (1) REGISTRATION UNDER SUCH LAWS IS NOT REQUIRED AND (2) AN OPINION
OF COUNSEL SATISFACTORY TO THE COMPANY IS FURNISHED TO THE COMPANY TO THE EFFECT
THAT REGISTRATION UNDER THE ACT AND THE APPLICABLE STATE SECURITIES LAWS IS NOT
REQUIRED.

                             AMERIGON INCORPORATED

                        WARRANT TO PURCHASE COMMON STOCK

          This Warrant (the "Warrant") represents and certifies that, for value
received, Big Star Investments LLC, a Delaware limited liability company  (the
"Holder") is entitled to subscribe for and purchase shares (subject to
adjustment from time to time pursuant to the provisions of Section 5 hereof) of
fully paid and nonassessable Class A Common Stock of Amerigon Incorporated, a
California corporation (the "Company"), of an amount up to 10% of the principal
amount of the Loans (as defined below) divided by the relevant Exercise Price
(as defined below) at the relevant Exercise Price specified in Section 2 hereof,
as such price may be adjusted from time to time pursuant to Section 5 hereof,
subject to the provisions and upon the terms and conditions hereinafter set
forth.

          As used herein, the term "Loans" shall mean the $1.5 million bridge
facility (the "Initial Loans") to be advanced to Company by Holder pursuant to
the Credit Agreement, dated as of March __, 2000, between the Company and the
Holder (as amended or modified from time to time, the "Credit Agreement") and,
in the event the Holder makes or commits to make in its sole discretion
additional advances thereunder of up to an aggregate of $2.5 million in
principal amount of additional loans under the Credit Agreement (the "Additional
Loans"), shall also mean such principal amount of Additional Loans.  The date
(if any) on which the Holder makes any Initial Loan or any Additional Loan is
referred to herein as a "Loan Date."

          As used herein, the term "Class A Common Stock" shall mean the
Company's presently authorized Class A Common Stock, no par value, and any stock
into or for which such Common Stock may hereafter be converted or exchanged.

          As used herein, the term "Exercise Price" shall mean, with respect to
the portion of this Warrant that is allocable to any Loan, the Market Price of
the Class A Common Stock as of the Loan Date of such Loan, provided that the
Exercise Price shall be subject to adjustment as provided in Section 5 hereof.
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          As used herein, the term "Market Price of the Class A Common Stock"
shall have the meaning set forth in Section 3(b) hereof.

     1.   TERM OF WARRANT.

     a.   TERM.  The purchase right represented by this Warrant is exercisable,
in whole or in part, at any time during a period beginning on the date hereof
and s ending five years after such date, but shall not be exercisable as to the
portion of this Warrant allowable to any Loans unless the Loan Date with respect
thereto has occurred.

     2.   EXERCISE PRICE.

          The Exercise Price shall be as provided in the definition of Exercise
Price, subject to adjustment from time to time pursuant to the provisions of
Section 5 hereof.

     3.   METHOD OF EXERCISE OR CONVERSION; PAYMENT; ISSUANCE OF NEW WARRANT.

          a.   EXERCISE.  Subject to Section 1 hereof, the purchase right
represented by this Warrant may be exercised by the Holder, in whole or in part,
by the surrender of this Warrant (with the notice of exercise form attached
hereto as EXHIBIT 1 duly executed) at the principal office of the Company and by
the payment to the Company, by cashier's check or wire transfer, of an amount
equal to the then applicable Exercise Price per share multiplied by the number
of shares then being purchased. The Company agrees that the shares so purchased
shall be deemed to be issued to the Holder as the record owner of such shares as
of the close of business on the date on which this Warrant shall have been
surrendered and payment made for such shares as aforesaid. In the event of any
exercise of this Warrant, certificates for the shares of stock so purchased
shall be delivered to the Holder within 15 business days thereafter and, unless
this Warrant has been fully exercised or expired, a new Warrant representing the
portion of the shares, if any, with respect to which this Warrant shall not then
have been exercised, shall also be issued to the Holder within such 15 business
day period.

     b.   CONVERSION.  Subject to Section 1 hereof, the Holder may convert this
Warrant (the "Conversion Right"), in whole or in part, into the number of shares
(less the number of shares which have been previously exercised or as to which
the Conversion Right has been previously exercised) calculated pursuant to the
following formula by surrendering this Warrant (with the notice of exercise form
attached hereto as EXHIBIT 1 duly executed) at the principal office of the
Company specifying the number of shares the rights to purchase which the Holder
desires to convert:

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                                            Y (A  -  B)
                                        ---------------
                                        X   -    A

where:                   X  =  the number of shares of Class A Common Stock to
                               be issued to the Holder;

                         Y  =  the number of shares of Class A Common Stock
                               subject to this Warrant for which the Conversion
                               Right is being exercised;

                         A  =  the Market Price of the Class A Common Stock (as
                               defined below) as of the trading day immediately
                               preceding the date of exercise of this Warrant;
                               and

                         B  =  the Exercise Price

          For purposes hereof, the "Market Price of the Class A Common Stock,"
          with respect to the portion of this Warrant allocable to a particular
          Loan, shall be (i) the average closing bid price of the Class A Common
          Stock, for ten (10) consecutive business days ending on the Loan Date
          of such Loan, as reported by Nasdaq, if the Class A Common Stock is
          traded on the Nasdaq SmallCap Market, or (ii) the average last
          reported sale price of the Class A Common Stock, for ten (10)
          consecutive business days ending on such applicable Loan Date, as
          reported by the primary exchange on which the Class A Common Stock is
          traded, if the Class A Common Stock is traded on a national securities
          exchange, or by Nasdaq, if the Class A Common Stock is traded on the
          Nasdaq National Market.

          The Company agrees that the shares so converted shall be deemed issued
          to the Holder as the record owner of such shares as of the close of
          business on the date on which this Warrant shall have been surrendered
          as aforesaid. In the event of any conversion of this Warrant,
          certificates for the shares of stock so converted shall be delivered
          to the holder hereof within 15 business days thereafter and, unless
          this Warrant has been fully converted or expired, a new Warrant
          representing the portion of the shares, if any, with respect to which
          this Warrant shall not then have been converted, shall also be issued
          to the holder hereof within such 15-day period.

     4.   STOCK FULLY PAID; RESERVATION OF SHARES.

          All Class A Common Stock which may be issued upon the exercise of the
rights represented by this Warrant will, upon issuance, be fully paid and
nonassessable, and free from all United States taxes, liens and charges with
respect to the issue thereof. During the period within which the rights
represented by this Warrant may be exercised, the Company will at all times have
authorized, and reserved for the purpose of the issuance upon exercise of the
purchase rights evidenced by this Warrant, a sufficient number of shares of its
Class A Common Stock to provide for the exercise of the rights represented by
this Warrant.

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     5.   ADJUSTMENT OF PURCHASE PRICE AND NUMBER OF SHARES.

          a.   ADDITIONAL SHARES.  In the event that the Company shall issue
additional shares of Class A Common Stock, or other securities exchangeable for,
exercisable for, or convertible into additional shares of Class A Common Stock,
in each case in an equity offering in excess of $5 million, for consideration
per share less than the Exercise Price relating to a portion of this Warrant
allocable to a particular Loan on the date of and immediately prior to any such
issue, then and in such event, the per share Exercise Price relating to the
portion of this Warrant allocable to such Loan shall be reduced concurrently
with such issuance or sale, to a price equal to the consideration per share of
such issuance; provided that such Exercise Price shall not be so reduced at such
time if the amount of such reduction would be an amount less than $0.01, but any
such amount shall be carried forward and reduction with respect thereto made at
the time of and together with any subsequent reduction which, together with such
amount and any other amount or amounts so carried forward, shall aggregate $0.01
or more. No adjustment in the Exercise Price shall be made on account of (i) the
grant of options exercisable for, or sales of, Class A Common Stock pursuant to
employee benefit plans previously approved by the Company's shareholders, (ii)
the issuance of stock, warrants or other securities or rights to persons or
entities with which the Company has business relationships provided such
issuances are for other than primarily equity financing purposes and provided
that (x) any such issuance does not exceed 2% of the then outstanding Class A
Common Stock of the Company (assuming full conversion and exercise of all
convertible and exercisable securities) and (y) the aggregate of all such
issuances since the date of this Warrant do not exceed 5% of the then
outstanding Class A Common Stock of the Company (assuming full conversion and
exercise of all convertible and exercisable securities).

     b.   STOCK SPLITS AND COMBINATIONS.  If the Company at any time or from
time to time after the date this Warrant is issued effects a subdivision of the
outstanding Class A Common Stock pursuant to a stock split or similar event, the
Exercise Price shall be proportionately decreased, and conversely, if the
Company at any time or from time to time after the date this Warrant is issued
combines the outstanding shares of Class A Common Stock into a smaller number of
shares in a reverse stock split or similar event, the Exercise Price shall be
proportionately increased. Upon the adjustment of the Exercise Price pursuant to
the foregoing provisions, the number of shares of Class A Common Stock subject
to the exercise of the Warrant shall be adjusted to the nearest full share by
multiplying the shares subject to the Warrant by a fraction, the numerator of
which is the Exercise Price immediately prior to such adjustment and the
denominator of which is the Exercise Price immediately after such adjustment.
Any adjustment under this subsection (b) shall be effective at the close of
business on the date the subdivision or combination becomes effective.

     c.   CERTAIN DIVIDENDS AND DISTRIBUTIONS.  If the Company at any time or
from time to time after the date this Warrant is issued makes, or fixes a record
date for the determination of holders of Class A Common Stock entitled to
receive a dividend or other distribution payable in additional shares of Class A
Common Stock, then and in each such event the number of shares of Class A Common
Stock subject to the Warrant shall be increased and the Exercise Price then in
effect shall be decreased as of the date of such issuance or, in the event such
record date is fixed, as of the close of business on such record date, by:

                                       4
<PAGE>

               (i)    multiplying the Exercise Price then in effect by a
     fraction (1) the numerator of which is the total number of shares of Class
     A Common Stock issued and outstanding immediately prior to the time of such
     issuance or the close of business on such record date, and (2) the
     denominator of which shall be the total number of shares of Class A Common
     Stock issued and outstanding immediately prior to the time of such issuance
     or the close of business on such record date plus the number of shares of
     Class A Common Stock issuable in payment of such dividend or distribution;
     and

               (ii)   multiplying the number of shares of Class A Common Stock
     subject to the Warrant by a fraction (1) the numerator of which is the
     total number of shares of Class A Common Stock issued and outstanding
     immediately prior to the time of such issuance or the close of business on
     such record date plus the number of shares of Class A Common Stock issuable
     in payment of such dividend or distribution, and (2) the denominator of
     which shall be the total number of shares of Class A Common Stock issued
     and outstanding immediately prior to the time of such issuance or the close
     of business on such record date.

          If, however, such record date is fixed and such dividend is not fully
paid or if such distribution is not fully made on the date fixed therefor, the
number of shares of Class A Common Stock subject to the Warrant and the Exercise
Price thereof shall be recomputed accordingly as of the close of business on
such record date and thereafter shall be adjusted pursuant to this subsection(c)
as of the time of actual payment of such dividends or distributions.

          d.   OTHER ADJUSTMENTS.  In the event the Company at any time or from
time to time after the date this Warrant is issued:

               (i)    makes a dividend or other distribution payable in
     securities of the Company other than shares of Class A Common Stock, or

               (ii)   changes any Class A Common Stock into the same or a
     different number of shares of any class or classes of stock, whether by
     recapitalization, reclassification or otherwise (other than a subdivision
     or combination of shares or stock dividend or a reorganization, merger,
     consolidation or sale of assets provided for elsewhere in this Section 5),
     or

               (iii)  effects a capital reorganization of the Class A Common
     Stock (other than a recapitalization, subdivision, combination,
     reclassification or exchange of shares provided for elsewhere in this
     Section 5) or merger or consolidation of the Company with or into another
     corporation, or the sale of all or substantially all of the Company's
     properties and assets to any other person,

          then, in each such event, any and all new, substituted or additional
securities to which Holder is or would be entitled by reason of its ownership of
the shares underlying this Warrant shall be immediately subject to the Warrant
and be included in the shares underlying this Warrant for all purposes
hereunder. After each such event, the Exercise Price per share shall be
proportionately adjusted so that the aggregate Exercise Price upon exercise of
the Warrant shall remain the same as before such event.

                                       5
<PAGE>

     6.   NOTICE OF ADJUSTMENTS.

          Whenever any Exercise Price shall be adjusted pursuant to Section 5
hereof, the Company shall prepare a certificate signed by its chief financial
officer setting forth, in reasonable detail, the event requiring the adjustment,
the amount of the adjustment, the method by which such adjustment was
calculated, the Exercise Price after giving effect to such adjustment and the
number of shares then purchasable upon exercise of this Warrant, and shall cause
copies of such certificate to be mailed (by first class mail, postage prepaid)to
the Holder of this Warrant at the address specified in Section 9(c) hereof, or
at such other address as may be provided to the Company in writing by the Holder
of this Warrant.

     7.   FRACTIONAL SHARES.

          No fractional shares of Class A Common Stock will be issued in
conjunction with any exercise hereunder, but in lieu of such fractional shares
the Company shall make a cash payment therefore on the basis of the Exercise
Price then in effect.

     8.   COMPLIANCE WITH SECURITIES ACT.

          The Holder of this Warrant, by acceptance hereof, agrees that this
Warrant and the shares of Class A Common Stock to be issued on exercise hereof
are being acquired for investment and that it will not offer, sell or otherwise
dispose of this Warrant or any shares of Class A Common Stock to be issued upon
exercise hereof except under circumstances which will not result in a violation
of the Securities Act of 1933, as amended (the "Act"). This Warrant and all
shares of Class A Common Stock issued upon exercise of this Warrant (unless
registered under the Act) shall be stamped and imprinted with a legend
substantially in the following form:

               "THIS SECURITY HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT
     OF 1933, AS AMENDED (THE "ACT"), OR APPLICABLE STATE SECURITIES LAWS AND
     MAY NOT BE TRANSFERRED OR OTHERWISE DISPOSED OF UNLESS IT HAS BEEN
     REGISTERED UNDER THE ACT AND SUCH LAWS OR (1) REGISTRATION UNDER SUCH LAWS
     IS NOT REQUIRED AND (2) AN OPINION OF COUNSEL SATISFACTORY TO THE COMPANY
     IS FURNISHED TO THE COMPANY TO THE EFFECT THAT REGISTRATION UNDER THE ACT
     AND THE APPLICABLE STATE SECURITIES LAWS IS NOT REQUIRED."

     9.   MISCELLANEOUS.

          a.   NO RIGHTS AS SHAREHOLDER.  The Holder of this Warrant shall not
be entitled to vote or receive dividends or be deemed the Holder of Class A
Common Stock or any other securities of the Company that may at any time be
issuable on the exercise hereof for any purpose, nor shall anything contained
herein be construed to confer upon the Holder of this Warrant, as such, any of
the rights of a shareholder of the Company or any right to vote for the election
of directors or upon any matter submitted to shareholders at any meeting
thereof, or to give or withhold consent to any corporate action (whether upon
any recapitalization, issuance of stock, reclassification of stock, change of
par value or change of stock to no par value, consolidation, merger, conveyance
or otherwise) or to receive notice of meetings, or to receive

                                       6
<PAGE>

dividends or subscription rights or otherwise until the Warrant shall have been
exercised and the shares purchasable upon the exercise hereof shall have become
deliverable, as provided herein.

     b.   REPLACEMENT.  On receipt of evidence reasonably satisfactory to the
Company of the loss, theft, destruction, or mutilation of this Warrant and, in
the case of mutilation, on surrender and cancellation of this Warrant, the
Company, at the Holder's expense, will execute and deliver, in lieu of this
Warrant, a new Warrant of like tenor.

     c.   NOTICE.  Any notice given to either party under this Warrant shall be
in writing, and any notice hereunder shall be deemed to have been given upon the
earlier of delivery thereof by hand delivery, by courier, or by standard form of
telecommunication or three (3) business days after the mailing thereof in the
U.S. mail if sent registered mail with postage prepaid, addressed to the Company
at its principal executive offices and to the Holder at its address set forth in
the Company's books and records or at such other address as the Holder may have
provided to the Company in writing.

     d.   GOVERNING LAW.  This Warrant shall be governed and construed under the
laws of the State of California.

                 [Remainder of page intentionally left blank]

                                       7
<PAGE>

This Warrant is executed as of this ___th day of March, 2000.

                                AMERIGON INCORPORATED

                                By:___________________________________

                                Name: Richard A. Weisbart
                                      --------------------------------

                                Title: President & CEO
                                       -------------------------------

                                       8

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