Document:

<PAGE>
                                                                     Exhibit 4.6

                                                                  EXECUTION COPY

                           FIRST AMENDMENT dated as of November 8, 2001 (this
                  "AMENDMENT"), to the Amended and Restated 364-Day Revolving
                  Credit Agreement dated as of August 14, 2001 (the "364-DAY
                  CREDIT AGREEMENT"), among THE GOODYEAR TIRE & RUBBER COMPANY,
                  an Ohio corporation (the "BORROWER"), the lenders party
                  thereto (the "LENDERS") and THE CHASE MANHATTAN BANK, a New
                  York banking corporation, as administrative agent for the
                  Lenders (in such capacity, the "AGENT").

         WHEREAS, pursuant to the terms and conditions of the 364-Day Credit
Agreement, the Lenders have agreed to make certain loans to the Borrower; and

         WHEREAS, the Borrower has requested that certain provisions of the
364-Day Credit Agreement be modified in the manner provided for in this
Amendment, and the Lenders are willing to agree to such modifications on the
terms and conditions set forth herein.

         NOW, THEREFORE, in consideration of the foregoing and for other good
and valuable consideration the parties hereto hereby agree as follows:

         1. DEFINED TERMS. Capitalized terms used and not defined herein shall
have the meanings given to them in the 364-Day Credit Agreement, as amended
hereby.

         2. AMENDMENTS TO THE 364-DAY CREDIT AGREEMENT.

         (a) Section 1.01 of the 364-Day Credit Agreement is hereby amended by
deleting in its entirety the table set

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                                                                               2

forth in the definition of "Applicable Spread" and inserting in its place the
following table:

   Category     Leverage Ratio    Eurodollar     CD Spread
   --------     --------------    ----------     ---------
                                  Spread Per     Per Annum
                                  ----------     ---------
                                  Annum
                                  -----

       1       less than or           0.4000%      0.5250%
               equal to 25%

       2       greater than 25%       0.5000%      0.6250%
               but less than or
               equal to 40%

       3       greater than 40%       1.1000%      1.2250%
               but less than or
               equal to 55%

       4       greater than 55%       1.3000%      1.4250%

         (b) Clause (a) of Article V of the 364-Day Credit Agreement is hereby
amended by deleting in its entirety the table set forth therein and inserting in
its place the following table:

          Period Ending                     Minimum Ratio
          -------------                     -------------

          September 30, 2001                 2.75 to 1.00
          December 31, 2001                  2.75 to 1.00
          March 31, 2002                     2.75 to 1.00
          June 30, 2002                      2.75 to 1.00
          September 30, 2002                 2.75 to 1.00
          December 31, 2002                  2.75 to 1.00
          March 31, 2003                     3.00 to 1.00
          June 30, 2003                      3.25 to 1.00
          September 30, 2003 and each
          Annual Period ending thereafter    3.50 to 1.00

         3. NO OTHER AMENDMENTS OR WAIVERS; CONFIRMATION. Except as expressly
amended hereby, the provisions of the 364-Day Credit Agreement are and shall
remain in full force and effect. Nothing herein shall be deemed to entitle the
Borrower to a consent to, or a waiver, amendment, modification or other change
of, any of the terms, conditions, obligations, covenants or agreements contained
in the 364-Day Credit Agreement in similar or different circumstances.

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                                                                               3

         4. REPRESENTATIONS AND WARRANTIES. The Borrower hereby represents and
warrants to the Agent and the Lenders that, as of the date hereof:

         (a) No Event of Default has occurred and is continuing.

         (b) The execution, delivery and performance by the Borrower of this
Amendment has been duly authorized by all necessary corporate and other action
and does not and will not require any registration with, consent or approval of,
notice to or action by, any person (including any Governmental Body) in order to
be effective and enforceable. The 364-Day Credit Agreement as amended by this
Amendment constitutes the legal, valid and binding obligation of the Borrower,
enforceable against it in accordance with its terms, subject to applicable
bankruptcy, insolvency, fraudulent conveyance, reorganization, moratorium or
other laws affecting creditors' rights generally and subject to general
principles of equity, regardless of whether considered in a proceeding in equity
or at law.

         (c) All representations and warranties of the Borrower set forth herein
and in the 364-Day Credit Agreement are true and correct in all material
respects on and as of the date hereof.

         5. AMENDMENT FEE. The Borrower agrees to pay to the Agent for the
account of each Lender that executes and delivers a copy of this Amendment at or
prior to 5:00 p.m., New York City time, on November 8, 2001, an amendment fee
(the "AMENDMENT FEE") equal to 0.15% of such Lender's Commitment (whether then
utilized or unutilized) as of November 8, 2001. The Amendment Fee shall be
payable upon the effectiveness of this Amendment.

         6. CONDITIONS PRECEDENT TO EFFECTIVENESS. This Amendment (including the
pricing increases effected by Section 2(a) hereof) shall become effective as of
and with effect from the date hereof, subject to the receipt by the Agent of
counterparts hereof duly executed and delivered by the Borrower and the Majority
Lenders.

         7. EXPENSES. The Borrower agree to pay or reimburse the Agent for its
out-of-pocket expenses in connection with this Amendment, including the
reasonable fees, charges and disbursements of Cravath, Swaine & Moore, counsel
for the Agent.

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                                                                               4

         8. GOVERNING LAW. THIS AMENDMENT AND THE RIGHTS AND OBLIGATIONS OF THE
PARTIES HERETO SHALL BE GOVERNED BY, AND CONSTRUED AND INTERPRETED IN ACCORDANCE
WITH, THE LAWS OF THE STATE OF NEW YORK.

         9. COUNTERPARTS. This Amendment may be executed by one or more of the
parties to this Amendment on any number of separate counterparts, and all of
said counterparts taken together shall be deemed to constitute one and the same
instrument. This Amendment may be delivered by facsimile transmission of the
relevant signature pages hereof.

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                                                                               5

         IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be
duly executed and delivered by their duly authorized officers as of the day and
year first above written.

                              THE GOODYEAR TIRE & RUBBER
                              COMPANY,

                               by
                                 ___________________________________
                                 Name:
                                 Title:

                              THE CHASE MANHATTAN BANK,
                              individually and as Agent,

                               by
                                 ___________________________________
                                 Name:
                                 Title:

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                                                                               6

                                    Signature page to the First Amendment
                                    dated as of November 8, 2001, to the
                                    Amended and Restated 364-Day Revolving
                                    Credit Agreement

                  Name of Lender:
                                   _______________________________________

                                    by
                                      ____________________________________
                                      Name:
                                      Title:<PAGE>
                                                                  EXHIBIT 10.1.5

               SIXTH AMENDMENT TO FINANCING AND SECURITY AGREEMENT

      THIS SIXTH AMENDMENT TO FINANCING AND SECURITY AGREEMENT (this
"Agreement") is made as of November 12, 2001, by GLASSTECH, INC., a corporation
organized under the laws of Delaware (the "Borrower"), and UPS CAPITAL
CORPORATION, a Delaware corporation ("Lender"), as successor-in-interest to BANK
OF AMERICA, N.A., a national banking association, formerly "NationsBank, N.A."
("BofA").

                                    RECITALS

      A.    The Borrower and BofA entered into a Financing and Security
Agreement dated July 2, 1997 (the same, as amended, modified, substituted,
extended and renewed from time to time, the "Financing Agreement"). Effective as
of August 31, 2001, Lender assumed from BofA all of its right, title and
interest in, to and under the Financing Agreement. The Financing Agreement
provides for agreements between the Borrower and the Lender with respect to the
"Loans" (as defined in the Financing Agreement).

      B.    The Borrower has requested that the Lender amend certain financial
covenants contained in the Financing Agreement.

      C.    The Lender is willing to agree to the Borrower's request on the
condition that this Agreement be executed.

                                   AGREEMENTS

      NOW, THEREFORE, in consideration of the premises and for other good and
valuable consideration, receipt of which is hereby acknowledged, the Borrower
and the Lender agree as follows:

      1. The Borrower and the Lender agree that the Recitals above are a part of
this Agreement. Unless otherwise expressly defined in this Agreement, terms
defined in the Financing Agreement shall have the same meaning under this
Agreement.

      2. The Borrower represents and warrants to the Lender as follows:

            (a) The Borrower is a corporation duly organized, and validly
existing and in good standing under the laws of the state in which it was
organized and is duly qualified to do business as a foreign corporation in good
standing in every other state wherein the conduct of its business or the
ownership of its property requires such qualification and in which the failure
to qualify would materially adversely affect the business, operations or
properties of the Borrower and/or its Subsidiaries.

            (b) The Borrower has the power and authority to execute and deliver
this Agreement and perform its obligations hereunder and has taken all necessary
and appropriate corporate action to authorize the execution, delivery and
performance of this Agreement.

            (c) The Financing Agreement, as amended by this Agreement, and each
of the other Financing Documents remains in full force and effect, and each
constitutes the valid and legally binding obligation of the Borrower,
enforceable in accordance with its terms, subject to bankruptcy, insolvency,
reorganization, moratorium and other laws of general application affecting the
rights and remedies of creditors and secured parties, and general principles of
equity regardless of whether applied in a proceeding in equity or at law.

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<PAGE>
            (d) After giving effect to this Agreement, all of the Borrower's
representations and warranties contained in the Financing Agreement are true and
correct on and as of the date of the Borrower's execution of this Agreement,
except that the representations and warranties which relate to financial
statements which are referred to in Section 4.1.11 of the Financing Agreement,
shall also be deemed to cover financial statements furnished from time to time
to the Lender pursuant to Section 6.1.1 (Financial Statements) of the Financing
Agreement.

            (e) After giving effect to this Agreement, no Event of Default and
no event which, with notice, lapse of time or both would constitute an Event of
Default, has occurred and is continuing under the Financing Agreement or the
other Financing Documents.

            (f) No right of setoff, defense, counterclaim, cross-claim or
recoupment claim exists in favor of the Borrower in respect of its obligations
under the Financing Agreement.

      3. The Borrower acknowledges, consents to and agrees to be bound by the
assignment of BofA to Lender of its right, title and interest as "Lender" under
the Financing Agreement and in respect of the Obligations, effective as of
August 31, 2001, and further agrees, in connection therewith, (a) to attorn to
Lender as "Lender" under the Financing Agreement effective as of and from such
assignment date, and (b) that Lender shall be released from, and shall have no
liability to the Borrower for, any action (or inaction) taken (or omitted) by
BofA as "Lender" in respect of Borrower or pursuant to the Financing Agreement
prior to such assignment becoming effective.

      4. Section 6.1.15 ("Financial Covenants") shall be amended by deleting in
its entirety, the paragraph immediately following the end of existing subsection
(a) thereof ("Fixed Charge Coverage Ratio"), added pursuant to the fifth
amendment to the Financing Agreement, and substituting in its place, the
following paragraph, effective retroactive to June 29, 2001:

      Notwithstanding the foregoing, in respect of (i) the fiscal quarter of the
      Borrower ending on June 30, 2001 and (ii) the fiscal quarter of the
      Borrower ending on September 30, 2001(and only for such fiscal quarters),
      compliance by Borrower with the financial covenant set forth in the
      aforesaid subsection (a) shall be waived if, but only if, the Borrowing
      Base, as then most recently reported, exceeds the aggregate principal
      amount of the Revolving Loan and Outstanding Letter of Credit Obligations
      on such fiscal quarter end date by at least $1,000,000. In addition to the
      foregoing, in respect of (i) the fiscal quarter of Borrower ending on
      September 30, 2001 and (ii) the fiscal quarter of the Borrower ending on
      December 31, 2001(and only for such fiscal quarters), notwithstanding
      anything contained in this Agreement to the contrary, until the date on
      which Borrower is required to submit a Compliance Certificate with respect
      to the quarterly period ending on December 31, 2001, under Section 6.1(c)
      of this Agreement (the "Report Date"), Borrower may disregard its
      compliance, or lack thereof, with the financial covenant set forth in
      subsection (a) above, to the extent that any such non-compliance or the
      failure to report the same, would constitute a Default, Event of Default
      or breach of any of Borrower's obligations under this Agreement,
      including, without limitation for purposes of (i) any Loan Notice,
      Borrowing Base Report or other written submission of Borrower to Lender,
      (ii) any requests by Borrower of Lender pursuant to this Agreement,
      including, without limitation, any requests for the advance of funds or
      for selection of an interest rate (as contemplated by Section 2.3.2) or
      otherwise, or (iii) any representation, warranty or covenant contained in
      the Financing Agreement, provided, however, that Borrower shall be
      required to comply with such financial covenant on the Report Date.

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      5. The Borrower shall pay at the time this Agreement is executed and
delivered an amendment fee in the amount of $25,000, which amendment fee is
fully earned and non-refundable.

      6. The Borrower shall pay at the time this Agreement is executed and
delivered all fees, commissions, costs, charges, taxes and other expenses
incurred by the Lender and its counsel in connection with this Agreement,
including, but not limited to, reasonable fees and expenses of the Lender's
counsel, all recording fees, taxes and charges and costs of lien search reports.

      7. This Agreement may be executed in any number of duplicate originals or
counterparts, each of such duplicate originals or counterparts shall be deemed
to be an original and taken together shall constitute but one and the same
instrument. The parties agree that their respective signatures may be delivered
by facsimile. Any party which chooses to deliver its signature by facsimile
agrees to provide a counterpart of this Agreement with its inked signature
promptly to each other party.

      IN WITNESS WHEREOF, the Borrower and the Lender have executed this
Agreement under seal as of the date and year first written above.

                                 UPS CAPITAL CORPORATION

                                 By: /s/ Scott J. Mower
                                    --------------------------------------------
                                    Name:  Scott J. Mower
                                    Title: Managing Director

                                 GLASSTECH, INC.

                                 By: /s/ Mark D. Christman
                                    --------------------------------------------
                                    Name:  Mark D. Christman
                                    Title: President and Chief Executive Officer

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