Over one million copies of Forza Motorsport 3 have been sold, and developer Turn 10 has celebrated this milestone with the release of the “Hot Holidays Car Pack”.

Since its release, Forza Motorsport 3 players on Xbox Live have raced across more than 590 million miles of simulated track over 64 million sessions, worth a total of 6.6 million hours of game time.

The DLC pack includes some of 2010's most anticipated racing cars, such as the 2010 Ferrari 599XX.

The full list of cars in the Hot Holidays Car Pack is as follows:

1. 2010 Ferrari 599XX2. 2010 Mercedes SLR Stirling Moss3. 2010 Lamborghini LP6700-4 SV4. 2010 Porsche Panamera Turbo5. 2010 Ferrari 458 Italia6. 2010 Jaguar XFR7. 2010 Audi S48. 2009 Aston Martin #007 AMR Lola9. 2009 Audi #2 Sport Team Joest R15 TDI10. 2010 Nissan GT-R Spec V

The pack is available for 400 Microsoft Points, and another content pack is set for a January 12th release to coincide with the Detroit- based North American International Auto Show.