The Mitsubishi HSR (Highly Sophisticated-transport Research) is a range of concept cars exhibited by Mitsubishi Motors through the late 1980s and 1990s. There were six distinct iterations of the vehicle released biannually to coincide with the Tokyo Motor Show, with each model after the original identified by a Roman numeral suffixed to the name.
A 180 hp modulated displacement version of the 1.6 L V6 powered the fourth prototype, a 4WD sports car featuring an all-wheel anti-lock braking system.
Source: Wikipedia