Remember the MicroMachines Pod Racer Launchers?
I'm betting these are non-transforming DD's in wheel form (like what came with the R2 Carry-Case) that launch out of a "Hot Wheels race car launcher when you push the pin down."
Why does anyone expect more? Kids will play with this for about as long as they do the ForceFlipper Deluxe Figures, and adults will buy this either to be completists who complain on these forums a lot, or for dioramas, to have permanently rolled up droids.
This product is nothing to get excited about. If you need the wheeled droids for dioramas, here's an easy way to pick up 3 with a larger piece of plastic you don't want or need. Instead of 9 dollars, the simple pieces of molded wheel-droids would have cost you 50 cents in a gum ball machine otherwise.
Marketing "geniuses" at Hasbro know how to get 18 times that amount out of you, though.