The car made its debut at the Paris Motor Show in 1974. Initially fitted with a 260 horsepower engine, the 911 Turbo got a power boost in 1977. Thanks to its new intercooling system, the 3.3-liter motor could generate 300 horsepower. As the world's first turbocharged, series production supercar, the Porsche 911 Turbo combined power with luxury. And it still impresses over 3 decades later -- rocketing from 0 to 100 kilometers an hour in 5.5 seconds flat.