SIRIUS and XM Announce Additional Support for Merger

Diverse Group of Advocates for a Combined SIRIUS-XM Cite Economic and

Consumer Benefits

    WASHINGTON and NEW YORK, Dec. 13 /PRNewswire-FirstCall/ -- Three
 additional Members of Congress joined General Motors Corporation, Club for
 Growth, Harpo Productions, the Rural Coalition, and celebrity talent Andres
 Cantor, Bill Mack, Wynton Marsalis, Cal Ripken Jr. and Barry Switzer as the
 latest supporters of the pending merger of XM Satellite Radio (
 XMSR) and SIRIUS Satellite Radio ( SIRI). The latest bi-partisan
 Congressional supporters include the Chairman of the Congressional Hispanic
 Caucus, Rep. Joe Baca (D-CA), Rep. Bob Filner (D-CA) and Rep. Connie Mack
 (R-FL). This new support adds to the diverse list of supporters for the
 pending merger.
 
     In recent filings, Rep. Baca and Rep. Mack detailed how the merger will
 benefit the economy, enhance innovation, and strengthen competition:
 
     "I find that the merger will not only maintain an advanced
 technological innovation, it will bolster the industry thereby
 strengthening our economy. More families and individuals will have an
 opportunity to access satellite radio."
 
     --Rep. Joe Baca
 
     "The proposed merger will enable satellite radio to become a stronger
 competitor and will drive all other players in the market, including
 terrestrial radio, to focus on making their services even more appealing to
 consumers."
 
     --Rep. Connie Mack
 
     GM added its support by emphasizing the increased range of
 entertainment and price choices for consumers and urged the FCC to avoid
 conditions that would compromise the performance or programming content
 available for vehicles with single mode receivers:
 
     "GM believes the merger clearly will increase entertainment choices in
 the automotive environment particularly as "best of both" and as a la carte
 pricing becomes available for satellite radio services."
 
     --Richard M. Lee, Executive Director - Satellite Radio Services, GM
 
     The Rural Coalition echoed these comments, highlighting increased
 programming diversity resulting from the merger and other benefits for
 rural consumers in particular:
 
     "We believe that the merger will empower rural listeners' choices,
 allowing them to build programming packages that are tailored to their
 budgets and listening tastes."
 
     --Lorette Picciano, Executive Director, Rural Coalition
 
     Jazz musician and artistic director of Jazz at Lincoln Center, Wynton
 Marsalis, expressed his support for the merger because of the competitive
 landscape and enhanced exposure for new artists and musicians.
 
     "In a market that's crowded with everything from FM radio to iPods and
 downloaded music to internet radio to music on cell phones, the merger will
 help satellite radio [become] an enduring platform that will continue to
 benefit artists long into the future."
 
     -- Wynton Marsalis, Artistic Director, Jazz at Lincoln Center and XM on
 Air Personality
 
     On behalf of XM's "Oprah & Friends" channel, Harpo Productions
 expressed excitement about the expanded platform that a merger would
 provide for programming whose goal is to help listeners live their best
 lives.
 
     "On behalf of Oprah & Friends, our channel on XM Radio, I write to
 express our support for the merger of XM and SIRIUS Satellite Radio."
 
     -- Tim Bennett, President, Harpo Productions
 
     Former big league great and co-host of XM's "Ripken Baseball" lauded
 the merger for the increased audience it would provide for specialty
 programming.
 
     "I am excited about the SIRIUS and XM merger and the prospect of
 increased listenership for sports programming such as ours. Merger
 synergies will expand variety and more unique content currently unavailable
 anywhere else."
 
     -- Cal Ripken Jr., Baseball Hall of Famer and Co-Host, Ripken Baseball
 
     For more information on the SIRIUS-XM merger, please visit
 www.SIRIUSmerger.com or www.XMmerger.com.
 
     About SIRIUS
 
     SIRIUS, "The Best Radio on Radio," delivers more than 130 channels of
 the best programming in all of radio. SIRIUS is the original and only home
 of 100% commercial free music channels in satellite radio, offering 69
 music channels. SIRIUS also delivers 65 channels of sports, news, talk,
 entertainment, traffic, weather and data. SIRIUS is the Official Satellite
 Radio Partner of the NFL, NASCAR and NBA, and broadcasts live play-by-play
 games of the NFL and NBA, as well as live NASCAR races. All SIRIUS
 programming is available for a monthly subscription fee of only $12.95.
 
     SIRIUS Internet Radio (SIR) is a CD-quality, Internet-only version of
 the SIRIUS radio service, without the use of a radio, for the monthly
 subscription fee of $12.95. SIR delivers more than 80 channels of talk,
 entertainment, sports, and 100% commercial free music.
 
     SIRIUS Backseat TV(TM) is the first ever live in-vehicle rear seat
 entertainment featuring three channels of children's TV programming,
 including Nickelodeon, Disney Channel and Cartoon Network, for the
 subscription fee of $6.99 plus applicable audio subscription fee.
 
     SIRIUS products for the car, truck, home, RV and boat are available in
 more than 20,000 retail locations, including Best Buy, Circuit City,
 Crutchfield, Costco, Target, Wal-Mart, Sam's Club, RadioShack and at
 shop.sirius.com.
 
     SIRIUS radios are offered in vehicles from Audi, Bentley, BMW,
 Chrysler, Dodge, Ford, Infiniti, Jaguar, Jeep(R), Land Rover, Lexus,
 Lincoln, Mercury, Maybach, Mazda, Mercedes-Benz, MINI, Mitsubishi, Nissan,
 Rolls Royce, Scion, Toyota, Volkswagen, and Volvo. Hertz also offers SIRIUS
 in its rental cars at major locations around the country.
 
     Click on www.sirius.com to listen to SIRIUS live, or to purchase a
 SIRIUS radio and subscription.
 
     About XM
 
     XM is America's number one satellite radio company with more than 8.5
 million subscribers. Broadcasting live daily from studios in Washington,
 DC, New York City, Chicago, the Country Music Hall of Fame in Nashville,
 Toronto and Montreal, XM's 2007 lineup includes more than 170 digital
 channels of choice from coast to coast: commercial-free music, premier
 sports, news, talk radio, comedy, children's and entertainment programming;
 and the most advanced traffic and weather information.
 
     XM, the leader in satellite-delivered entertainment and data services
 for the automobile market through partnerships with General Motors, Honda,
 Hyundai, Nissan, Porsche, Subaru, Suzuki and Toyota is available in 140
 different vehicle models for 2007. XM's industry-leading products are
 available at consumer electronics retailers nationwide. For more
 information about XM hardware, programming and partnerships, please visit
 http://www.xmradio.com.
 
     This communication contains "forward-looking statements" within the
 meaning of the Private Securities Litigation Reform Act of 1995. Such
 statements include, but are not limited to, statements about the benefits
 of the business combination transaction involving Sirius Satellite Radio
 Inc. and XM Satellite Radio Holdings Inc., including potential synergies
 and cost savings and the timing thereof, future financial and operating
 results, the combined company's plans, objectives, expectations and
 intentions with respect to future operations, products and services; and
 other statements identified by words such as "anticipate," "believe,"
 "plan," "estimate," "expect," "intend," "will," "should," "may," or words
 of similar meaning. Such forward- looking statements are based upon the
 current beliefs and expectations of SIRIUS' and XM's management and are
 inherently subject to significant business, economic and competitive
 uncertainties and contingencies, many of which are difficult to predict and
 generally beyond the control of SIRIUS and XM. Actual results may differ
 materially from the results anticipated in these forward-looking
 statements.
 
     The following factors, among others, could cause actual results to
 differ materially from the anticipated results or other expectations
 expressed in the forward-looking statement: general business and economic
 conditions; the performance of financial markets and interest rates; the
 ability to obtain governmental approvals of the transaction on a timely
 basis; the failure of SIRIUS and XM stockholders to approve the
 transaction; the failure to realize synergies and cost-savings from the
 transaction or delay in realization thereof; the businesses of SIRIUS and
 XM may not be combined successfully, or such combination may take longer,
 be more difficult, time-consuming or costly to accomplish than expected;
 and operating costs and business disruption following the merger, including
 adverse effects on employee retention and on our business relationships
 with third parties, including manufacturers of radios, retailers,
 automakers and programming providers. Additional factors that could cause
 SIRIUS' and XM's results to differ materially from those described in the
 forward-looking statements can be found in SIRIUS' and XM's Annual Reports
 on Form 10-K for the year ended December 31, 2006, and Quarterly Reports on
 Form 10-Q for the quarters ended March 31, 2007, June 30, 2007 and
 September 30, 2007, which are filed with the Securities and Exchange
 Commission (the "SEC") and available at the SEC's Internet site
 (http://www.sec.gov). The information set forth herein speaks only as of
 the date hereof, and SIRIUS and XM disclaim any intention or obligation to
 update any forward looking statements as a result of developments occurring
 after the date of this communication.
 
 

     SIRIUS
     Media Relations
     Patrick Reilly
     212-901-6646
     PReilly@siriusradio.com
 
     Kelly Sullivan
     Joele Frank, Wilkinson Brimmer Katcher
     212-355-4449
     ksullivan@joelefrank.com
 
     XM
     Media Relations
     Nathaniel Brown
     212-708-6170
     Nathaniel.Brown@xmradio.com
 
     Chance Patterson
     202-380-4318
     Chance.Patterson@xmradio.com
 
 

SOURCE SIRIUS; XM