This could be really good, but the achivements are just too unbalanced, the levels are too similar and easy to beat, and there's not enough stuff and variation to buy for the earned money. Also some fundamental items are bad, such as the lack of hit counters, the fact that you can stop your car while it's in the air or how if you stop your car you can get eternal boucnes of cones.
A 1/5. Would've been 1/anything. Totally unresponsive controls make this game nothing but a disaster - #1 in this kind of game is to feel control of the character and that's just nowhere to be found here.
There should be a "ghost" of the block you're moving, to get a feeling for how it's going to move once you release the mouse button. Right now, the interface make it feel very 'heavy' and slow.