Frustrating
The concept is good and everything but too many things make it unenjoyable.
The music sucks after it repeats one or two times, I suggest a mute button.
Building the thing is frikking annoying because most of the time the wheel suddenly comes out of the vehicle no matter how securely I place it, and of course when it's too secure the vehicle hardly budges, not that it goes very fast anyway.
But the most annoying part for me is when you restart, because when you do it starts from the level name and then has to recap the whole map all over and over again, and the camera isn't exactly the fastest thing in the world.
So I really, really didn't enjoy this game, it was a waste of time for me.