Document:

Exhibit 10.55

                            UNSECURED PROMISSORY NOTE

                                                                   July 7, 2006

      FOR VALUE RECEIVED, the undersigned, GreenMan Technologies Inc., (the
"Debtor"), hereby promises to pay to the order of Maurice E. Needham, an
individual residing at 80 Bridge Street, Manchester, MA 01944 (the "Holder") on
or before, June 30, 2009 the principal sum of Twenty Thousand, Two Hundred and
Sixty Dollars ($20,260) or such lesser principal amount then outstanding,
together with all accrued and unpaid interest thereon. Interest on the principal
amount of this Note will accrue from and including the date hereof until and
including the date such principal amount is paid, at a rate equal to twelve
percent (12%) per annum. Interest only shall be payable, in quarterly
installments commencing on October 1, 2006 in lawful money of the United States
of America, in immediately available funds. Interest shall be computed on the
basis of a 360-day year and a 30-day month.

      The outstanding balance of this Note shall be rendered immediately due and
payable, without the necessity of a Demand Notice, in case of any of the
following acts (individually, an "Event of Default"): (a) entry of any judgment
or order against the Debtor for the payment of money, if the same is not
satisfied or enforcement proceedings are not stayed within sixty (60) days or
if, within sixty (60) days after the expiration of any such stay, the judgment
or order is not dismissed, discharged or satisfied; (b) appointment of a
receiver, trustee, custodian or similar official, for the Debtor or any property
or assets of the Debtor; (c) conveyance of any or all assets to a trustee,
mortgagee or liquidating agent or assignment for the benefit of creditors by the
Debtor; or (d) commencement of any proceeding under any law or any jurisdiction,
now or hereafter in force, relating to bankruptcy, insolvency, renegotiation of
outstanding indebtedness, arrangement or otherwise to the relief of debtors or
the readjustment of indebtedness, by or against the Debtor. Notwithstanding
anything contained herein to the contrary, upon the occurrence of any such Event
of Default, the entire outstanding amount of principal and interest of this Note
shall become immediately due and payable, without presentment, demand, protest
or other notice of any kind, all of which are hereby expressly waived.

      The Debtor may prepay this Note, in whole or in part, at any time prior to
demand or acceleration. Any permitted prepayment of principal by the Debtor will
be accompanied by payment of all accrued and unpaid interest on the principal
sum being repaid.

      The Debtor agrees to pay all costs, charges and expenses incurred by the
Holder and its assigns (including, without limitation, costs of collection,
court costs, and reasonable attorneys' fees and disbursements) in connection
with the successful enforcement of the Holder's rights under this Note (all such
costs, charges and expenses being herein referred to as "Costs"). Presentment
for payment, demand, protest, notice of protest and notice of nonpayment are
hereby waived. The Debtor agrees that any delay on the part of the Holder in
exercising any rights hereunder will not operate as a waiver of such rights, and
further agrees that any payments received hereunder will be applied first to
Costs, then to interest, and the balance to principal. The Holder shall not by
any act, delay, omission, or otherwise be deemed to waive any of its rights or
remedies, and no waiver of any kind to enforce this Note shall be valid unless
in writing and signed by the Holder. This Note is payable in any events and is
not subject to offset or reduction because of any other claims of Debtor against
the Holder.
<PAGE>

      This Note applies to, inures to the benefit of, and binds the successors
and assigns of the parties hereto. This Note is not negotiable or transferable
to any other Holder without the written consent of the Debtor. This Note is made
under and shall be governed by the internal laws of the Commonwealth of
Massachusetts.

      IN WITNESS WHEREOF, the Debtor has executed this Note as an instrument
under seal as of the date first written above.

DEBTOR

/s/ Charles E. Coppa
--------------------
GreenMan Technologies Inc.
Charles E. Coppa
Chief Financial Officer

                                       2Exhibit 10.56

                            UNSECURED PROMISSORY NOTE

                                                                   July 7, 2006

      FOR VALUE RECEIVED, the undersigned, GreenMan Technologies Inc., (the
"Debtor"), hereby promises to pay to the order of Barbara Morey, an individual
residing at 1 Karlton Road, Andover, Massachusetts, 01810 (the "Holder") on or
before, June 30, 2009 the principal sum of Seventy Nine Thousand, and Sixty
Dollars ($79,060) or such lesser principal amount then outstanding, together
with all accrued and unpaid interest thereon. Interest on the principal amount
of this Note will accrue from and including the date hereof until and including
the date such principal amount is paid, at a rate equal to twelve percent (12%)
per annum. Interest only shall be payable, in quarterly installments commencing
on October 1, 2006 in lawful money of the United States of America, in
immediately available funds. Interest shall be computed on the basis of a
360-day year and a 30-day month.

      The outstanding balance of this Note shall be rendered immediately due and
payable, without the necessity of a Demand Notice, in case of any of the
following acts (individually, an "Event of Default"): (a) entry of any judgment
or order against the Debtor for the payment of money, if the same is not
satisfied or enforcement proceedings are not stayed within sixty (60) days or
if, within sixty (60) days after the expiration of any such stay, the judgment
or order is not dismissed, discharged or satisfied; (b) appointment of a
receiver, trustee, custodian or similar official, for the Debtor or any property
or assets of the Debtor; (c) conveyance of any or all assets to a trustee,
mortgagee or liquidating agent or assignment for the benefit of creditors by the
Debtor; or (d) commencement of any proceeding under any law or any jurisdiction,
now or hereafter in force, relating to bankruptcy, insolvency, renegotiation of
outstanding indebtedness, arrangement or otherwise to the relief of debtors or
the readjustment of indebtedness, by or against the Debtor. Notwithstanding
anything contained herein to the contrary, upon the occurrence of any such Event
of Default, the entire outstanding amount of principal and interest of this Note
shall become immediately due and payable, without presentment, demand, protest
or other notice of any kind, all of which are hereby expressly waived.

      The Debtor may prepay this Note, in whole or in part, at any time prior to
demand or acceleration. Any permitted prepayment of principal by the Debtor will
be accompanied by payment of all accrued and unpaid interest on the principal
sum being repaid.

      The Debtor agrees to pay all costs, charges and expenses incurred by the
Holder and its assigns (including, without limitation, costs of collection,
court costs, and reasonable attorneys' fees and disbursements) in connection
with the successful enforcement of the Holder's rights under this Note (all such
costs, charges and expenses being herein referred to as "Costs"). Presentment
for payment, demand, protest, notice of protest and notice of nonpayment are
hereby waived. The Debtor agrees that any delay on the part of the Holder in
exercising any rights hereunder will not operate as a waiver of such rights, and
further agrees that any payments received hereunder will be applied first to
Costs, then to interest, and the balance to principal. The Holder shall not by
any act, delay, omission, or otherwise be deemed to waive any of its rights or
remedies, and no waiver of any kind to enforce this Note shall be valid unless
in writing and signed by the Holder. This Note is payable in any events and is
not subject to offset or reduction because of any other claims of Debtor against
the Holder.
<PAGE>

      This Note applies to, inures to the benefit of, and binds the successors
and assigns of the parties hereto. This Note is not negotiable or transferable
to any other Holder without the written consent of the Debtor. This Note is made
under and shall be governed by the internal laws of the Commonwealth of
Massachusetts.

      IN WITNESS WHEREOF, the Debtor has executed this Note as an instrument
under seal as of the date first written above.

DEBTOR

/s/ Charles E. Coppa
--------------------
GreenMan Technologies Inc.
Charles E. Coppa
Chief Financial Officer

                                       2Exhibit 10.57

                                RELEASE AGREEMENT

      This General Release (the "Release"), dated as of November 30, 2006, is by
and among GreenMan Technologies, Inc., a Delaware corporation and Robert H.
Davis ("Mr. Davis")

      WHEREAS, GreenMan and Mr. Davis entered into an Employment Agreement,
dated as of April 2,1999 (the "Employment Agreement").

      WHEREAS, On April 12, 2006, Mr. Davis and GreenMan reached an agreement
whereby Mr. Davis tendered his resignation as President, Chief Executive Officer
and Director of GreenMan with Mr. Davis's severance to commence May 1, 2006.

      WHEREAS, Section 7.4 of the Employment Agreement provides for certain
payments to be made to Mr. Davis pursuant to such resignation of which there
have been several agreed upon negotiations.

      NOW, THEREFORE, in consideration of the mutual covenants set forth herein
and of other valuable consideration, the receipt and sufficiency of which are
hereby acknowledged, the parties hereto agree as follows:

      1. GreenMan agrees to pay Mr. Davis or his estate (with specific reference
to Mr. Davis's wife, Nancy Karfilis Davis):

      a) an amount equal to one years salary ($230,000), payable in 26 equal
bi-weekly amounts pursuant to GreenMan's normal payment cycle and commencing May
1, 2006 and ending on the pay date of May 4, 2007.

      b) an amount equal to seven weeks of earned but unused vacation pay
totaling $30,962 payable in three bi-weekly payments of $8,846.15 commencing
with the pay date of May 18, 2007 with a final payment of $4,423.08 paid on the
pay date of June 29, 2007.

      c) GreenMan agrees to either pay for or reimburse Mr. Davis or his estate,
for his monthly health insurance coverage, not to exceed $1,500 per month during
the period of May 2006 through June 2007. Reimbursement shall be made within 3
days of receipt by GreenMan of a copy of the check and invoice made by Mr. Davis
or his estate for said health coverage.

      d) GreenMan agrees to maintain and pay Mr. Davis's monthly life insurance
premium (total insured amount is $230,000), as currently being done under
GreenMan's UNUM life insurance program for the period of May 1, 2006 through
June 30, 2007. Mr. Davis will have 31 days after June 30, 2007 in which to
notify UNUM of his desire to assume all responsibility for said life insurance
policy.

      The payment of all amounts noted in this paragraph shall be deemed full
and complete satisfaction of all obligations under Section 7.4 of the Employment
Agreement and any and all other amounts which may be due Mr. Davis by GreenMan.
<PAGE>

      2. For good and valuable consideration, including the consideration
referenced in Section 1 hereof, Mr. Davis, for himself and on behalf of his
respective heirs, personal representatives, beneficiaries, agents, successors
and assigns, hereby release, remise and forever discharge GreenMan and its
respective affiliates, predecessors, successors and assigns, and the
stockholders, directors, officers, employees, agents, attorneys, consultants,
insurers and representatives of each of the foregoing (the "Released Parties"),
of and from any and all actions, causes of action, suits, claims, demands,
accountings, covenants, contracts, debts, liabilities or obligations of any
nature, fixed or contingent, known or unknown, whether at law or in equity, by
reason of any obligation of GreenMan as set forth in Section 7.4 of the
Employment Agreement or any other amounts due Mr. Davis by GreenMan. Mr. Davis
shall indemnify and hold the Released Parties harmless from and against all
damages, expenses, costs and reasonable attorney's fees which the Released
Parties may suffer or incur by reason of any breach by Mr. Davis of any of the
provisions hereof.

      For good and valuable consideration, including the consideration
referenced in this agreement hereof, GreenMan, its respective affiliates,
predecessors, successors and assigns, and the stockholders, directors, officers,
employees, agents, attorneys, consultants, insurers and representatives of each
of the foregoing hereby release, remise and forever discharge Mr. Davis, his
respective heirs, personal representatives, beneficiaries, agents, successors
and assigns from any and all actions, causes of action, suits, claims, demands,
accountings, covenants, contracts, debts, liabilities or obligations of any
nature, fixed or contingent, known or unknown, whether at law or in equity, by
reason of any obligation of Mr. Davis as set forth in Section 7.4 of the
Employment Agreement or any other amounts due GreenMan by Mr. Davis. GreenMan
shall indemnify and hold Mr. Davis harmless from and against all damages,
expenses, costs and reasonable attorney's fees which Mr. Davis may suffer or
incur by reason of any breach by GreenMan of any of the provisions hereof.

      3. This Agreement is binding upon and inures to the benefit of both
parties and their respective successors and assigns, including any entity with
which or into which GreenMan may be merged or which may succeed to its assets or
business.

      4. This General Release shall be construed in accordance with the laws of
the State of Massachusetts. This General Release may be signed in any number of
counterparts, each of which shall be deemed an original, but all of which
together shall constitute but one and the same instrument. IN WITNESS WHEREOF,
the undersigned have hereunto set their hands on this General Release as of the
date first stated above.

                                    GreenMan Technologies, Inc.

                                    By: /s/ Charles E. Coppa
                                        Charles E. Coppa
                                        Chief Financial Officer

                                        /s/ Robert H. Davis
                                        Robert H. Davis

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00114-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00114-of-00352.parquet"}], [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00114-of-00352.parquet"}]]