[patrickt]

They're one single piece of wood that is two inches thick and ten inches wide. When you push the back, the front does "turn around" the wheels, but then you just push the front where you want it and it straightens out. It's pretty darn stable even without the little lock pieces that stick via Velcro. I just didn't want the car somehow rolling off the boards, but I don't think it would do that without you trying pretty hard. And I probably didn't even need the 8 locking casters (two per wheel), but it does require a little strength to move the car around. I've seen the GoJak video where a guy is pushing a car with one finger... I just don't believe it.