Atari today announced that the Test Drive PURE POWER 2 Download Set is now available on Xbox Live featuring seven supercars, including a Ferrari 250 GTO and the 25th anniversary edition of the Lamborghini Countach. One of the seven vehicles, the Chevrolet Corvette C1 1957 Hardtop, will be available free to all, while the other cars must be bought with in-game money at the cars' respective dealerships. Check the press release for details.