Reminds me of the go-cart races I used to have on my street when I was 10 years old. I'd make a cart out of three boards -- a plank to sit on, and two lengths of 2X4 to attach the wheels to. The 2X4 in front pivoted -- I'd steer it with my feet. We'd get our wheels wherever we found them. A lot of unhappy neighbors were missing wheels to their lawn mowers, seed spreaders, and little red wagons. Generally used a railroad spike for an axle on each wheel, held in place with bent nails. Then, invariably, one of the kids' fathers had to get into the act by going into his garage and building a real go-cart for his boy, which ruined the fun for the rest of us kids because naturally we couldn't compete with ball-bearing wheels and actual steering. But it was fun while it was fun.