Microsoft's launched the Forza Motorsport 4 demo onto Xbox Live Marketplace ahead of its full release next week. The demo comes in at 1.27Gb, and features only a Quick Race option. Cars available to drive on the Bernese Alps include 1970 Mercury Cougar Eliminator, Kia cee'd, 2011 Subaru WRX STI and 2011 Ferrari 599 GTO.
It's currently Gold exclusive, so Silver members are out of luck for a week. Get it from the console Marketplace now, or from the online Marketplace here. The full Turn 10-made racer is out next week