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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.