In the 1960s, the Indianapolis 500 was a hotbed of the new and unusual. This is the decade when the front-engine roadster gave way to the mid-engine racer. As time went along, the cars sprouted wings and engine choices ran from stock-block, overhead-valve V8s to aircraft turbines. One of the strangest cars ever to contest the Indy 500 was the Hurst Floor Shifter Special, from the fertile, rule-challenging imagination of Smokey Yunick. Resembling a torpedo with a sidecar, Yunick's strange machine was among the first to pay serious attention to the car's frontal area and its aerodynamic effects. It was powered by the seminal Offenhauser DOHC inline-four, which rode in the center fuselage, while the driver was hung out in his own separate pod on the left side of the car. Safety obviously wasn't a big concern, and driver Bobby Johns ended up putting car backwards on the last day of qualifying for the 1964 race. It was never seen at the speedway race again, but ended up in the Indianapolis Motor Speedway Hall of Fame Museum.