Sometimes your cheque book won’t stretch to purchasing your dream motor. But don’t worry too much, there are some cars that even the biggest bank balances can’t buy, the dream cars that will forever remain a dream. These are the concept cars that never get made.

Mercedes-Benz C111
Produced by the German manufacturers in the 1960s and 70s. The experimental design was used as a testbed for the revolutionary Wankel engines. Other features included multi-link rear suspension, gull-wing doors and a luxurious interior with leather trim and air conditioning.

Mercedes made a number of models in the early 1970s, with top speeds reportedly close to reaching 186mph. That speed went up to 200mph when the design switched to diesel engines, breaking both diesel and gasoline speed records in the process. Designed by Bruno Sacco, just 16 of these vehicles were ever produced.

Mercedes-Benz got hopes of a return in 1991 when they unveiled the C112 at the Frankfurt Motor Show, but again the company decided not to put the car into production, even with 700 deposits for the motor.

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