Beta just started, anyone else get in? I haven't tried but want to try it out....

http://www.gamespot.com/ps3/driving/modnationracers/video/6211096

http://www.us.playstation.com/PS3/games/modnation_racers

It's kinda like a new Mario Kart but can make own tracks and modify everything with your character, cars and tracks and with HIGH Def graphics.