 Using his own funds and without notifying Kaiser, Darrin produced a 2-seat roadster design.After he had completed a clay model in the first half of 1952, Darrin contacted Bill Tritt, who had pioneered the use of glass-reinforced plastic (GRP, commonly known as fiberglass) in sports car bodies to have him produce a prototype.This body was shipped to Darrin's design shop in Santa Monica, California, and mated to a Henry J chassis.