The 1966 PMI Puma Prototype 3DR was a PMI project car aiming for the perfect lightweight endurance sports car. It was powered by a 1.1 liter inline-3 cylinder engine with racing tune, producing 92 horsepower. The 710kg car was not extremely fast, but it was nimble, fun to drive and still accelerated from 0-100 in under 10 seconds.
Although never going into production, the 2 remaining examples in private ownership are regularly used at track days. And the owners and anyone else lucky enough to drive them, can only conclude this car could have been the MX-5 of its era. Small, light, not too fast, but extremely fun to drive.