Sony has posted a U.S. TV advertisement for Gran Turismo PSP on the official PlayStation blog.

The 40-second video features a real driver racing around Laguna Seca in a Corvette ZR1 while his passenger drives the same track in the game on a PSP.

Gran Turismo PSP will be released this Thursday, 1 October, on UMD and as a free download for PSPgo buyers.