I dont know why, but Lulu's post brought back a memory of my early childhood. I was maybe in the third grade? Well I was still able to ride the Big Wheel Bikes.. Boy do I miss those things. You could do a 180 or 360 turn so easily. But anyway I was hauling ass down my street which is downhill btw. And for some reason the section of handle bars and the "big" wheel came off. So I just had a seat with two small wheels and no brakes. I manage to stop myself by running into a park car. The neighbors were not the least happy.....