Found this powered golf caddy on Craigslist at a very reasonable price and thought it might make the basis for a fighting robot. I also thought it might make several other things, say an electric tricycle.
Added support plates and an axle to hang the small bike on and voila!
At this point I haven't much into it and could probably sell it as a kid's toy. Alternatively I could just sell the bike and continue with the original plan for a fighting robot. We'll see.