Exhibit 10.14

Execution Copy

SECOND AMENDMENT TO SECURITY AGREEMENT

This SECOND AMENDMENT TO SECURITY AGREEMENT (this “Amendment”), dated as of
January 16, 2008, is made and given by each of the undersigned (collectively,
the “Grantors” and individually, each a “Grantor”), in favor of WB QT, LLC, a
Delaware limited liability company, as agent for the lenders (the “Lenders”)
from time to time party to the Credit Agreement defined below (in such capacity,
the “Secured Party”).

RECITALS

A. Each Grantor executed in favor of the Secured Party, for the benefit of the
Lenders, the Security Agreement dated as of January 31, 2007, as amended by a
First Amendment to Security Agreement dated as of November 6, 2007 (the
“Security Agreement”) pursuant to which each Grantor pledged and granted to the
Secured Party, for the benefit of the Lenders, a security interest in the
property described therein.

B. The Grantors desire to amend certain provisions of the Security Agreement and
the Secured Party has agreed to make such amendments, subject to the terms and
conditions o this Amendment.

AGREEMENT

NOW, THEREFORE, in consideration of the premises and of the mutual covenants and
agreements herein contained, it is agreed as follows:

1. Defined Terms. Capitalized terms used in this Amendment which are defined in
the Security Agreement shall have the same meanings as defined therein, unless
otherwise defined herein.

2. Amendment of Obligations. The definition of “Obligations” contained in
Section 1(a) of the Security Agreement is hereby amended in its entirety to read
as follows:

“Obligations” shall mean (a) all indebtedness, liabilities and obligations of
each Grantor to the Secured Party or any Lender of every kind, nature or
description under the Credit Agreement, including the Borrower’s obligations on
any promissory note or notes under the Credit Agreement and any note or notes
hereafter issued in substitution or replacement thereof, and any other Loan
Document (as defined in the Credit Agreement), (b) any and all indebtedness,
liabilities and obligations of any Grantor to the Secured Party or any Lender of
every kind, nature and description under any Guaranty and any other guaranty or
guaranties executed and delivered by such Grantor in favor of the Secured Party,
(c) all liabilities of each Grantor under this Agreement, and in all of the
foregoing cases whether due or to become due, and whether now existing or
hereafter arising or incurred.

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3. Effectiveness. This Amendment shall be effective as of the date first above
written upon the complete execution and delivery (whether by facsimile or
otherwise) thereof.

4. Affirmation of Security Agreement. The Secured Party and each Grantor each
acknowledge and affirm that the Security Agreement, as amended hereby, is hereby
ratified and confirmed in all respects and all terms, conditions and provisions
of the Security Agreement, except as amended by this Amendment, shall remain
unmodified and in full force and effect. All references in any document or
instrument to the Security Agreement are hereby amended and shall refer to the
Security Agreement as amended hereby.

5. Successors. This Amendment shall be binding upon each Grantor, the Secured
Party and their respective successors and assigns, and shall inure to the
benefit of each Grantor, the Secured Party and the successors and assigns of the
Secured Party.

6. Counterparts. This Amendment may be executed in several counterparts as
deemed necessary or convenient, each of which, when so executed, shall be deemed
an original, provided that all such counterparts shall be regarded as one and
the same document, and any party to this Amendment may execute any such
agreement by executing a counterpart of such agreement.

7. Governing Law. THIS AMENDMENT SHALL BE GOVERNED BY THE INTERNAL LAWS OF THE
STATE OF MINNESOTA, WITHOUT GIVING EFFECT TO CONFLICT OF LAW PRINCIPLES THEREOF.

[Remainder of page intentionally left blank.]

 

2

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IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be duly
executed as of the date first written above.

 

WB QT, LLC, as Agent By:   /s/ Jonathon Wood Name:   Jonathon Wood Title:   CFO
TECSTAR AUTOMOTIVE GROUP, INC. By:   /s/ Kenneth R. Lombardo Name:   Kenneth R.
Lombardo Title:   Secretary QUANTUM FUEL SYSTEMS TECHNOLOGIES WORLDWIDE, INC.
By:   /s/ W. Brian Olson Name:   W. Brian Olson Title:   CFO

 

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[Signature Page to Second Amendment to Security Agreement]

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CLASSIC DESIGN CONCEPTS, LLC By:   /s/ Kenneth R. Lombardo Name:   Kenneth R.
Lombardo Title:   Secretary PERFORMANCE CONCEPTS, LLC By:   /s/ Kenneth R.
Lombardo Name:   Kenneth R. Lombardo Title:   Secretary POWERTRAIN INTEGRATION,
LLC By:   /s/ Kenneth R. Lombardo Name:   Kenneth R. Lombardo Title:   Secretary
REGENCY CONVERSIONS, LLC By:   /s/ Kenneth R. Lombardo Name:   Kenneth R.
Lombardo Title:   Secretary

 

S-2

[Signature Page to Second Amendment to Security Agreement]

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STARCRAFT AUTOMOTIVE GROUP, INC. By:   /s/ Kenneth R. Lombardo Name:   Kenneth
R. Lombardo Title:   Secretary TECSTAR, L.P. By:   /s/ Kenneth R. Lombardo Name:
  Kenneth R. Lombardo Title:   Secretary TECSTAR PARTNERS, LLC By:   /s/ Kenneth
R. Lombardo Name:   Kenneth R. Lombardo Title:   Secretary TROY TOOLING, LLC By:
  /s/ Kenneth R. Lombardo Name:   Kenneth R. Lombardo Title:   Secretary UNIQUE
PERFORMANCE CONCEPTS, LLC By:   /s/ Kenneth R. Lombardo Name:   Kenneth R.
Lombardo

 

S-3

[Signature Page to Second Amendment to Security Agreement]

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Title:   Secretary

 

WHEEL TO WHEEL, LLC By:   /s/ Kenneth R. Lombardo Name:   Kenneth R. Lombardo
Title:   Secretary WHEEL TO WHEEL POWERTRAIN, LLC By:   /s/ Kenneth R. Lombardo
Name:   Kenneth R. Lombardo Title:   Secretary

 

S-4

[Signature Page to Second Amendment to Security Agreement]