2009 Racers sets on the shelf. I picked up #8124. The set includes two cars, and parts to attach to the fold out race track (to make signs and flags). The fold out race track is "t" shaped with Technic tubes, with tabs to enclose the box. The red plastic car on the one end snaps down onto the top of the box (clips that snap onto the Technic tubes).
It's a neat little set... I'm not totally convinced that I like the fold out track... but it makes the set portable and fold out into a nice "play set".