Toyota Publica Sports
From Toyota Wiki
The first public viewing was at the 1962 Tokyo Motor Show. It featured just 2 seats, a small but high revving engine and a sliding canopy for entry.
The Publica used a 2 cylinder Flat engine engine, so the Publica Sports is likely to have used the same engine.
It was further deveoped into the production Toyota Sports 800 but without the sliding canopy.