Codemasters today announced the launch of a downloadable demo of its upcoming racer, GRID, as well as an incredible (US-exclusive) competition to win a Ford Mustang GT-R worth $90,000!

To enter the competition, which is sponsored by eBay Motors, you must simply submit your best lap time in the demo's Time Trial competition mode before midnight on May 25. You can do so by following this link.

"Codemasters Racing Studio redefined off road racing with DiRT last year, and we are confident that the launch of GRID, from the same acclaimed racing team, will again redefine the racing genre by putting the focus in racing games back on the racing itself," said Peter Chan, director of business development at Codemasters, Inc.

"With eBay Motors integration, we are able to provide an exciting opportunity for racing fans to experience the GRID demo while rewarding them with a chance to win an amazing, one-of-a-kind eBay Motors Mustang."