A new Forza Motorsport 4 live action short called Endangered Species debuts today for all members of Xbox Live - along with the official demo for Turn10 and Microsoft’s popular racing game. The short film features Jeremy Clarkson, host of the BBC's popular Top Gear show, who provides the narration for a tongue-in-cheek look at why the real world is becoming an unfriendly place for those who truly love automobiles. It also features stunt driver Martin Ivanov, whose credits include the “The Bourne Supremacy,” “Mission: Impossible – Ghost Protocol,” “Quantum of Solace” and more. The film premiers today at TopGear.com .

The Forza Motorsport 4 Xbox LIVE demo is also available today, giving fans a chance to jump into the driver’s seat before the game’s launch. Starting today, Xbox LIVE Gold members can download the Forza Motorsport 4 demo, and all other Xbox LIVE members will be able to download it starting on Oct. 7.

The Xbox LIVE demo includes five cars on several circuits of the all-new Bernese Alps track. The cars in the demo are 2010 Ferrari 458 Italia, 2012 BMW M5, 2011 Subaru Impreza WRX STI, 1970 Mercury Cougar Eliminator, and 2009 Pagani Zonda Cinque.

When signed into Xbox LIVE, the demo will also The demo supports the official leaderboards for lap times and showcases the all-new Rivals Mode that will let players compete online against their friends in a variety of game types, whether they’re online or not...

Find out more here . Forza Motorsport 4 launches on Oct. 11 in North America, Oct. 14 in Europe and Oct. 20 throughout the rest of the world.