Nothing worthwhile. DP wasted it and the F2007. They're there, fully rendered and fully drivable, but there's nowhere meaningful to drive them. You can use them online and in Arcade, and you can take pictures of them, but you can't use them in either A or B-spec, and that's an absolute shame. It also makes no sense, as there's absolutely no reason to forbid these cars from participating in events, especially since it's not as though they're the most overly-dominating cars in the game, as both the X2010 and Formula GT are even faster. (By "faster" I don't mean "higher top-end speed" but "faster lap times", as I don't give two buckets of crap about the fact that this and that car have a higher top-end velocity, although both the X2010 and FGT also have a higher top-end speed.)