The Dr. Oldsmobile theme was one of Oldsmobile's most successful marketing campaigns in the early '70s, it involved fictional characters created to promote the wildly popular 442 muscle car. 'Dr. Oldsmobile' was a tall lean professor type who wore a white lab coat. His assistants included 'Elephant Engine Ernie' who represented the big block 455 Rocket engine. 'Shifty Sidney' was a character who could be seen swiftly shifting his hand using a Hurst shifter. 'Wind Tunnel Waldo' had slicked back hair that appeared to be constantly wind blown. He represented Oldsmobile's wind tunnel testing, that produced some of the sleekest designs of the day. Another character included 'Hy Spy' who had his ear to the ground as he checked out the competition.