The Xbox 360's answer to Gran Turismo 4, Forza Motorsport 4, now has a demo available on Xbox Live Marketplace, weighing in at 1.27Gb. Major Nelson's blog states that gamers should check their region to see if it's available.
The demo features the Bernese Alps with a single Quick Race game mode. Players can sample the 1970 Mercury Cougar Eliminator, Kia cee’d, 2011 Subaru WRX STI and 2011 Ferrari 599 GTO.