Based on the Daihatsu Cuore, the PAC (Project Automotive Commuter) was Michelotti’s most successful city car concept, pursuing Michelotti"’s dream of creating a small, rational, versatile, economical car for urban use. The modular assemble allowed easy production of different versions on the same structural base. The two-cylinder 548cc engine, with a countershaft to reduce vibrations, gave the PAC a 70-mph top speed.
Source: Concept Car Central