In 1988 Hot Wheels introduced the Go Kart. The 1:64 scale toy features a Rotax 2 stroke engine (indicated by the radiator) rather than a Briggs & Stratton engine.
Produced in 30 different colours, with chrome or gold wheels, the only thing missing is a full Intrepid Kart version to complete the set.
The lightest Hot Wheels ever made does seem a little disproportionate, when viewed with a driver at the wheel.