Porsche 356A Carrera GT
The Porsche 356 is most notably known as the first production car, produced from 1948-1965. The 356A was produced from 1955-1959 and just over 21,000 were built.
Porsche built two versions of the vehicle, one for the street "The De Luxe" and Gran Turismo track version.
Several Porsche 356s were stripped down in weight, and were modified in order to have better performance and handling for these races. A few notable examples include the 356 SL, and the 356A Carrera GT.
Source: Wikipedia, 2011