The Air Chariot was initially conceived by Ron Rudat, Serpentor's figure designer. Management assigned the concept to Guy Cassaday to refine. Guy's early Air Chariot illustrations below were labeled "Cobra Emperor Imperial Hovercraft" and dated 7-16-85.
Guy gave the Air Chariot a more fluid design (whereas Ron's design was more hard edged), and he incorporated the Cobra head on the front. Guy hand built the model from styrene. The Polaroids below show Ron Rudat's presentation art, the foam costing model, and Guy with his painted model.
The numbers on the gun decals are an easter egg showing Guy's birthday, November 6th.