This is a progressive history of the world's fastest street-legal[clarification needed] production car over the years (as opposed to concept cars or modified cars).
The first automobile ever produced was the Benz Patent Motorwagen,[1] built in 1885 and unveiled in 1886 by Karl Benz. Unique and consequently the fastest, it established a record speed of 16 km/h (10 mph). More than a century later, in September 2007, the SSC Ultimate Aero TT registered the latest record, of 412 km/h (256.18 mph).
Comparing claimed speeds of the "fastest car(s) in the world", especially in historical cases, is difficult due to there being no standardized method for determining the top speed, nor a central authority to verify any such claims. The current title holder, the SSC Ultimate Aero, was certified as such by Guinness World Records for the average top speed achieved on a two-way run.