Jaguar XJ 220
The story of the XJ220 is a strange one. Conceived in the late ’80s as Jaguar’s first road-going supercar, it looked very promising. The concept car and the prototypes had Jaguar’s V12 engine but tuned to produce high output. However, halfway into development, it was decided to install a new 3.5-liter twin-turbo V6 unit with 542 hp. The car’s design was fantastic; flowing lines and a wide stance emphasized its performance and speed (via Motor Trend).
When it was released, the XJ220 was the world’s fastest road-going model with an enormous price tag. Despite the hype and wealthy customers waiting to buy this model, several delays in production and the lack of V12 affected the market, and eventually, less than 300 were built. The XJ220 got its name since it could top 220 mph and was never officially sold in the USA.