In secret testing almost two weeks (April 1 to be exact) after the 1970 12 Hours of Sebring race Alfa Romeo arrived at Sebring with their one-of-a-kind, six-wheeled, twelve cylinder Alfa-Romeo T33/6/12. Designed to give the Porsche 917 and Ferrari 512 a run for its money, the Alfa Romeo sported a 5-liter V12/60 degrees/4v engine and six wheels in total.
The six-wheel Alfa Romeo T33 project was cancelled abruptly after teens from a local high school snuck onto the raceway at night and stole the car from its hanger/garage. The chassis was found two weeks later in a nearby orange grove minus the engine.
For several years after this incident rumors circulated about a V12 hot rod that was blowing away all comers in the Sebring area. Not to be outdone by Alfa Romeo, other race constructors soon jumped on the six-wheel bandwagon. Ferrari had their 312/T6, Tyrrell had the P34, March had the 2-4-0 and Williams had the FW08B. In both the World Sportscar Championship and Formula 1 these cars were soon outlawed.