1. HENNESSEY VENOM F5: 301 MPH
Boasting a claimed top speed of 301 mph, the Venom F5 smashes the previous top speed figure by more than a school zone speed limit. To do so, Hennessey started with an all-new, 2,950-pound carbon fiber chassis (the Venom GT is based on the Lotus Exige), and bolted a 1,600-hp, 7,4-liter, twin-turbo V8 to it. The results are absolutely astonishing, as the car can reportedly go from 0 to 249 to 0 mph in less than 30 seconds total. Hennessey has yet to confirm its top speed with the Guinness Book of World Records, so the Koenigsegg Agera RS remains the official fastest car in the world … for now.