Dome Zero
Dome Zero was a small Japanese car company dedicated to producing expensive road-going and race models. The production started in 1976 and continued until 1986, but it is still unclear how many cars ever saw the light of day.

The Dome Zero had a 2.8-liter SOHC six-cylinder engine with 147 HP, which doesn’t sound like much, but the car was extremely light and the performance was still barely acceptable. This car would remain forgotten, but its appearance in the Gran Turismo video game series cast some light on this exciting project (via Supercar Nostalgia).