Porsche 917. Drivers to this day say, “the 917 is the scariest thing I’ve ever driven. I feared for my life ever second.” Over 1,300 horsepower. No downforce. The seat belt had been invented for race cars just 8 years before. Helmets were “a cool idea” at that point. The car’s top speed was 250mph down the Mulsanne straight. Truly terrifying.