Glas S1004 and the belt drive camshaft

 After WW2 the agricultural manufacturer Hans Glas designed and developed the Goggo motor scooter, starting production in 1950. Production of the scooter stopped in 1955 with the introduction of a minicar, the Goggomobil. 
The Dingolfing, Bavaria company continued to grow and introduced the S1004 Coupe in 1962. Their engine designer designed an engine for this car that used the then-novel method of driving the overhead cam by means of a toothed rubber belt, shown here. 
 Glas built about 40,000 cars between 1960 and 1968. In 1966 the company was bought out by BMW who apparently were only interested in the patents for the belt driven cam.

 More here

Much thanks, Rolf!