Chariot racing in vehicles that make a Reliant look classy will make the British laugh; unfortunately you do not have them, and so the reference is lost on you.
An economy car, glassfibre bodied, basic engineering, generally assumed to be the poor relation to a "proper" car. The one above was the transport of the stars of a comedy about lower class individuals living on the barely legal edge of market trading, and their eternally over optimistic belief in the future.
Simson Duo, 50cc, using parts from the Simson 50cc moped. 4 speed, piston ported, criminally poor brakes. The gear change on the solo bike will not be rushed, or you get noises like lots of bolts being cut.