The Forza Horizon demo is now available on the Xbox Marketplace for Xbox LIVE Gold subscribers. Non-Gold subscribers, meanwhile, receive the taster next week.
The demo, which weighs in at 1.57 GB, contains several events such as street races and the Horizon Festival. Certain events will automatically become Rivals Mode events upon its completion, meaning players will be able to compete against friends for the fastest time.
In addition, the demo also lets you drive and explore a particular section of the entire game map.
Those who do play the demo will unlock a custom designed 2013 SRT Viper GTS; it's only available for those who play the demo and buy the game.
Forza Horizon is due for a release on October 23, 2012.