When my son was really small I probably pushed him 1000 miles in his red and yellow Little Tykes Cozy Coupe. I also flopped over the top of that little car a few times when the front wheels randomly stopped working at speed. If you have fond memories of these little toy cars, you might want to check out the street-legal version you can ride in now that you are grown up.
The car was made by a guy named John Bitmead. The builder says that he spent 1000 hours and about £4,000 (~$6m500 USD) on the project. The car started out as a Daewoo Matiz, has an 800cc engine inside of it and is street legal. It has a top speed of 70mph.
I don’t see how this thing can actually be street legal. I wouldn’t want to be in an accident in this thing, even though it has airbags. Check out the videos to see the car in action.