How many wheels are there on a car?

Another designer, Paul Tam, joined Larry and Ira. Paul's first design for Hot Wheels was the Whip Creamer. Tam continued to work for Mattel until 1973. Among the many futuristic designs Tam thought up for Hot Wheels, some of the collector's favorites include Evil Weevil (a Volkswagen with two engines), Open Fire (an AMC Gremlin with six wheels), Six Shooter (another six wheeled car), and the rare Double Header (co-designed with Larry Wood).