I got one for christmas. It's a really shoddy product. It's made of some real cheap plastic that feels like it's gonna snap in half if you applied too much force to it. And the spinning thing is dumb... whoever made it didn't bother to use it. It falls off all the time and there is not enough water pressure to handle the sides of the car. You're better off just doing it the old fashion way.
I guess there's a reason why it was on late-night TV. hehe