30 concept cars that never hit the mainstream

Audi Quattro

The Audi Quattro was in production from 1980 to 1991, and the vehicle appeared to have been revived at the 2010 Paris Motor Show. But the Quattro remains a car of the past for now. The later versions of the Audi TT and Audi R8 are based on the 2010 Quattro concept.

Honda Fuya-Jo

Somewhere between a street cleaner and a bus, the Honda Fuya-Jo debuted at the 1999 Tokyo Auto Show. The hybrid vehicle was meant to be a nightclub on wheels, with a DJ-themed dashboard and a non-slip floor.