The black Dodge Charger was driven by veteran stunt driver Bill Hickman, who played one of the hitmen and helped with the chase scene choreography. The other hitman was played by Paul Genge, who played a character who had ridden a Dodge off the road to his death in an episode of "Perry Mason" ("The Case of the Sausalito Sunrise") two years earlier. In a magazine article many years later, one of the drivers involved in the chase sequence remarked that the Charger - with a larger engine (big-block 440 cu. in. versus the 390 cu. in.) and greater horsepower (375 versus 325) - was so much faster than the Mustang that the drivers had to keep backing off the accelerator to prevent the Charger from pulling away from the Mustang. This, however is a curious claim given that the Mustang had a greater power-to-weight ratio than the Charger: 9.1lbs/HP for the Mustang versus 10.2lbs/HP for the Charger.