Jemma-

That's the fuel tank it holds about a liter for petrol. The muffler can be seen down near the axle on the other side of the bike. The engine is a 23cc as far as I know.

The bike will go about 20 mph with me on it and I weigh in at 190 lbs.

I know I could convert it to run on some of my model airplane fuel (15% nitro, the balance is alcohol and castor oil), but that would be kind of expensive and I don't think it would go a whole lot faster....if I wanted to go faster, I'd get on one of my various other two wheeled contivances. Yeah, that's my "relaxation mode of transportation".