The guarantee says clearly that no SIRIUS radios will become obsolete as a result of a merger with XM.

SIRIUS started a huge a national print and retail advertising campaign today, which sets forth the “SIRIUS Guarantee” in national and metropolitan publications. The guarantee says clearly that no SIRIUS radios will become obsolete as a result of a merger with XM. SIRIUS has millions of radios in the market, including many that are built into the vehicles manufactured by its automakers.

Customers who sign up now for SIRIUS will have their subscription rate honored by the merged company. As a merged company, SIRIUS expects to be able to offer even more flexibility in subscriptions and programming selection.

Following a merger, SIRIUS will be able to offer the best of both services in a mix of programming that can be accessed by existing radios, including such critically acclaimed SIRIUS programming as:

- 100% commercial-free music

- The best sports line-up including the NFL, NASCAR, NBA and college sports

- Top personalities, such as Howard Stern, with two dedicated full-time channels, Martha Stewart Living Radio, CosmoRadio, Playboy Radio, and Blue Collar Comedy channel, among many others

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, NBA and NHL, and broadcasts live play-by- play games of the NFL, NBA and NHL, 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 75 channels of talk, entertainment, sports, and 100% commercial free music.

SIRIUS products for the car, truck, home, RV and boat are available in more than 25,000 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.

XM Satellite Radio (Nasdaq: XMSR – News), the nation’s leading provider of satellite radio with more than 7 million subscribers, today announced that Acura will expand the availability of factory-installed XM radios throughout its entire 2007 model year line, making XM standard equipment on all Acura models. In addition, Acura will now offer XM NavTraffic, the nation’s first satellite-based real- time traffic information service, as part of the AcuraLink(TM) system available for an expanded line of four of its top-selling models including the 2007 Acura RL and TL luxury performance sedans as well as the all-new MDX and RDX luxury SUVs.

Acura was the first automotive brand to offer XM NavTraffic when it was introduced in the 2005 Acura RL. Now available in 44 major markets, award- winning XM NavTraffic delivers real-time traffic information by satellite to in-car navigation systems, giving consumers access to relevant traffic information to help avoid congestion while saving both time and the fuel often wasted by sitting in traffic.

“We’re proud to be Acura’s exclusive satellite radio and traffic service partner,” said Steve Cook, executive vice president, Automotive, XM Satellite Radio. “Acura buyers embrace and expect class-leading, in-car technology and entertainment, and XM has the best combination of services to meet their high standards.”

“Acura’s 2007 model line is designed to deliver a memorable ownership experience, from contemporary exterior styling and performance to a technically advanced but user-friendly interior,” said John Mendel, senior vice president of automobile operations for Acura. “Our partnership with XM Satellite Radio means that every Acura offers buyers a class-leading array of sophisticated satellite-delivered technologies — all designed to work together seamlessly while keeping passengers informed, entertained and in touch.”

With all 2007 Acuras, buyers drive home with a three-month complimentary subscription to XM Satellite Radio. Three months of XM NavTraffic service is also included with those vehicles equipped with compatible navigation systems.

About XM Satellite Radio
XM (Nasdaq: XMSR – News) is America’s number one satellite radio company with more than 7 million subscribers. Broadcasting live daily from studios in Washington, DC, New York City, the Country Music Hall of Fame in Nashville, Toronto and Montreal, XM’s 2006 lineup includes more than 170 digital channels of choice from coast to coast: the most 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, Toyota, Hyundai, Nissan, Porsche, Suzuki and Subaru, is available in more than 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.