That driving rock track heard in Gran Turismo 5's E3 2010 trailer is by Daiki Kasho, but it has no title. Fix that for Sony, and you'll get a credit in the game.
Head over to the official page to both hear the track and read over the lyrics. You're limited to one entry per person and the title must be in English. They also want a "descriptive comment regarding the music track (English only, in 150 words or less)," I guess to make sure people are thinking about this, and not just spamming them.
Judging will be done by the Gran Turismo series producer Kazunori Yamauchi. The deadline is July 25 at 11:59 p.m. U.S. Pacific time. The email address and other terms and conditions are on the official page at the link. Good luck!
Gran Turismo 5 E3 2010 Trailer Music Title Naming Campaign [Gran-Turismo.com via Ripten]