Ok, sorry for my bad link. I went in and found some good links now. I hope these work.
YouTube-Pedal Cars
YouTube-pedal cars
I know it looks like the some link but they both bring up some differant you tubes.
Look for A GreatPedal-car Collection Bobby Dixon
The Pedal Car King
There are some cool old Commercials and theres a site called Toycollector.com
CarDreamer.com does have some cool stuff on as well.