This is a vehicle I made for burning man 2001. It featured a welded steel frame and a gas 4 stroke engine. It never worked very well because of the super long chain down to the wheels (which kept breaking) and because there was too much slop in the steering. I learned a lot though and I really liked the shape which was my main motivation to build it.
Currently disassembled in my studio - I'll probably cut it up with the torch and use the steel for something else.