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                                                                   Exhibit 10.11

                    GM/DIRECTV DIRECTOR DESIGNATION AGREEMENT

         This GM/DIRECTV Director Designation Agreement, dated as of January 28,
2003 (this "Agreement"), is hereby entered into by and among XM Satellite Radio
Holdings Inc., a corporation duly organized under the laws of the State of
Delaware (the "Company"); DIRECTV Enterprises, LLC, a limited liability company
organized under the laws of the State of Delaware ("DIRECTV"); and General
Motors Corporation, a corporation duly organized under the laws of the State of
Delaware ("GM"). The Company, DIRECTV and GM are collectively referred to herein
as the "Parties."

                                   WITNESSETH

         WHEREAS, the Company, DIRECTV, GM, and certain other current and former
investors in the Company are parties to an Amended and Restated Shareholders
Agreement, dated August 8, 2000 (the "2000 Agreement"), that relates to, among
other things, the designation of the Company's directors, but is being amended
on or about the date hereof to delete the director designation provisions, which
will no longer be part of the arrangements between the Company and such
investors; and

         WHEREAS, the Company, DIRECTV and GM believe it to be in the best
interests of the Company and the mutual best interests of each of DIRECTV and GM
to continue to have certain agreements with respect to the designation of
directors of the Company.

         NOW, THEREFORE, in consideration for the mutual covenants contained
herein, the adequacy, receipt, and sufficiency of which are hereby acknowledged,
the undersigned hereby agree as follows:

         Section 1.  Definitions.

         Affiliate: means, as applied to any Person, any other Person directly
or indirectly controlling, controlled by, or under direct or indirect common
control with, such Person. For purposes of this definition, "control"
(including, with correlative meanings, the terms "controlling," "controlled by"
and "under common control with"), as applied to any Person, means the
possession, directly or indirectly, of the power to direct or cause the
direction of the management and policies of such Person, whether through the
ownership of voting securities, by contract or otherwise.

         Common Stock: means all classes and series of the common stock of the
Company, any stock into which such common stock shall have been changed or
converted or any stock resulting from any capital reorganization or
reclassification of such common stock, and all other stock of any class or
classes (however designated) of the Company, the holders of which have the
right, without limitation as to amount, either to all or to a share of the
balance of current dividends and liquidating dividends after the payment of
dividends and distributions of any shares entitled to preference.

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         Common Stock Deemed Outstanding: means, at any given time, the number
of shares of Common Stock actually outstanding at such time, plus the number of
shares of Common Stock issuable upon the conversion, exchange, or exercise in
full, of all Convertible Securities, whether or not the Convertible Securities
are convertible into or exercisable or exchangeable for Common Stock at such
time.

         Convertible Securities: means securities or obligations that are
exercisable for, convertible into or exchangeable for shares of Common Stock.
The term includes options, warrants or other rights to subscribe for or purchase
Common Stock or to subscribe for or purchase other securities or obligations
that are convertible into or exercisable or exchangeable for Common Stock,
including, without limitation, the Company's Series A Convertible Preferred
Stock, the Company's 8.25% Series B Convertible Redeemable Preferred Stock, the
Company's 8.25% Series C Convertible Redeemable Preferred Stock, the Series GM
10% Senior Secured Convertible Notes due 2009 of the Company and XM Satellite
Radio Inc. ("XM"), the 10% Senior Secured Discount Convertible Notes due 2009 of
the Company and XM and the Warrant to purchase 10,000,000 shares of the
Company's Class A common stock issued to GM.

         Person: means any individual, partnership, corporation, joint venture,
limited liability company, association, trust, unincorporated organization, or a
government or agency or political subdivision thereof.

         Section 2. Board of Directors. One (1) member of the Company's Board of
Directors shall be designated as a nominee by the Company's Board of Directors
for GM or DIRECTV, as they may agree; provided however, that the Company's Board
of Directors shall not designate a nominee for any Party that does not hold (A)
in excess of 5% of the Common Stock Deemed Outstanding or (B) the full amount of
its original investment in the Company. Solely during such time as DIRECTV
remains a wholly owned subsidiary of Hughes Electronics Corporation, any
securities of the Company transferred to Hughes Electronics Corporation by
DIRECTV (and held by Hughes Electronics Corporation) shall be treated as
securities of the Company held by DIRECTV, for purposes of the preceding
sentence. The right of DIRECTV to have a director nominee designated pursuant to
this Section 2 also shall terminate, and any director nominee designated for
DIRECTV shall promptly resign from the Company's Board of Directors, if a
majority of the ownership interests of DIRECTV cease to be owned, directly or
indirectly, by Hughes Electronics Corporation or its Affiliates (provided that
the loss of DIRECTV's right to have a director nominee designated shall not
affect GM's rights under this Section 2).

         Section 3. Specific Performance. Each Party acknowledges (i) that it
will be impossible to measure in money the damage to each other Party if any of
them or any legal representative of any Party fails to comply with any of the
provisions of this Agreement, (ii) that every such provision is material, and
(iii) that in the event of any such failure, the Company and the other Parties
will not have an adequate remedy at law or in damages. Accordingly, each Party
hereto consents to the issuance of an injunction or the enforcement of other
equitable remedies against it at the suit of an aggrieved Party without the
posting of any bond or other security, to compel specific performance of all of
the terms hereof, and waives any defense thereto, including, without limitation,
the defenses of (i) failure of consideration, (ii) breach of any other provision
of this Agreement and (iii) availability or relief in damages.

                                      - 2 -

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         Section 4. GOVERNING LAW. THIS AGREEMENT SHALL BE GOVERNED BY AND
CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF DELAWARE WITHOUT GIVING
EFFECT TO ANY CONFLICT OF LAW PROVISIONS THEREOF.

         EACH OF THE PARTIES ACKNOWLEDGES THAT (i) IT IS A KNOWLEDGEABLE,
INFORMED, SOPHISTICATED BUSINESS ENTITY CAPABLE OF UNDERSTANDING AND EVALUATING
THE PROVISIONS SET FORTH IN THIS AGREEMENT, AND (ii) IT HAS BEEN REPRESENTED BY
SUCH COUNSEL AND OTHER ADVISORS OF ITS CHOOSING AS IT HAS DEEMED APPROPRIATE IN
CONNECTION WITH ITS DECISION TO ENTER INTO THIS AGREEMENT.

         Section 5. Parties In Interest. This Agreement shall be binding upon
and shall inure to the benefit of each Party and their respective successors and
permitted assigns as provided for herein, and by their signatures hereto, and
each Party intends to and does hereby become bound. Nothing expressed or
mentioned in this Agreement is intended or shall be construed to give any Person
other than the Parties hereto and their respective successors and assigns any
legal or equitable right, remedy or claim under or in or in respect of this
Agreement or any provision herein contained.

         Section 6. Severability of Provisions. In case any one or more of the
provisions contained in this Agreement should be invalid, illegal or
unenforceable in any respect, the validity, legality and enforceability of the
remaining provisions contained herein shall not in any way be affected or
impaired thereby.

         Section 7. Counterparts. This Agreement may be executed in any number
of counterparts all of which taken together shall constitute one agreement and
any Party hereto may execute this Agreement by signing any such counterpart.

         Section 8. Future Assurances. Each Party shall execute and deliver all
such future instruments and take such other and further action as may be
reasonably necessary or appropriate to carry out the provisions of this
Agreement and the intention of the Parties as expressed herein.

         Section 9. Termination. This Agreement shall be immediately terminated
upon any of the following: (i) the unanimous written consent to the termination
hereof by the Parties hereto or (ii) the dissolution, bankruptcy or receivership
of the Company.

                                      - 3 -

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         IN WITNESS WHEREOF, the Parties have caused this Agreement to be duly
signed as of the date first above written.

XM SATELLITE RADIO HOLDINGS INC.


By:    /s/ Joseph M. Titlebaum
   -----------------------------
Name:  Joseph M. Titlebaum
Title: Senior Vice President, General Counsel
       and Secretary


                    [Signature Page to GM Director Agreement]

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GENERAL MOTORS CORPORATION


By: /s/ R. J. Harries
   --------------------------------
Name: R. J. Harries
Title:


                    [Signature Page to GM Director Agreement]

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DIRECTV ENTERPRISES LLC


By: /s/ Michael W. Palkovic
   --------------------------------
Name: Michael W. Palkovic
Title: Senior Vice President


                    [Signature Page to GM Director Agreement]