Codemasters has released a demo for "GRID," giving players a chance to try out the upcoming racing simulation game and also to enter a contest to win a Ford Mustang GT-R. The top Five Players will receive an all Expenses-Paid Trip to the GRID(TM) Launch Party and a Chance to Win the eBay Motors Ford Mustang GT-R.

"The GRID playable demo is a US-exclusive fastest lap competition in which the ultimate winner will drive away with a brand new, customized, eBay Motors branded Ford Mustang GT-R.

Based on one of the coolest concept cars ever introduced to the market, the eBay Motors Ford Mustang GT-R has been built and modified to feature a complete custom body kit including a supercharged engine with 445HP, a race inspired side ported exhaust system, 20" GTR concept wheels, and a six stage custom pearl paint job, complete with eBay Motors' graphics. "

For the game that's all about the race, the GRID(TM) playable demo delivers intense competition right from the start as players compete in single-player GRID World events, 12-player online races, and then prove their worth in the white-knuckle Time Trial competition, which is home to the eBay Motors Challenge.

With the eBay Motors-branded Ford Mustang GT-R worth $90,000 as the ultimate prize, the eBay Motors Challenge has players competing for the fastest final lap time.

To participate, players submit their best time online at http://community.grid-game.com/win-ebay-mustang. Once authenticated, the lap time is then ranked against every other registered time on the online leaderboards. The challenge will end on May 25 at midnight. The top five players will be flown to San Francisco to attend a U.S. launch event for GRID on June 4 and compete in one final racing challenge for the Mustang GT-R.

The 894MB demo can be downloaded from AtomicGamer, FileFront, FileShack, Gamer's Hell, GameUpdates (torrent), or Worthplaying.