Bugatti Type 41 (Royale), 1932. Built between 1927 to 1933 the Type 41 was the largest production car ever to hit the road (at 6.4 metres long), with the largest engine (a 12,763 cc straight 8) also the largest wheels (24 inches). Ettore Bugatti had planned to build 25 but the great depression messed with his ambitions (it was also the most expensive car in the world at the time, selling for the equivalent of $700,000) and only 7 were ever made and Ettore himself destroyed one of them. The remaining 6 have survived to the present