Then you might appreciate this NSU Ro 80, built 1967-1977 with a Wankel Rotary engine. Voted European Car of the Year.
This preceded Mazda’s use of the Wankel, if I recall correctly.
NSU of course was absorbed into Audi, but was a separate company at the time of this car.
http://www.motorbase.com/vehicle/by-id/890/
http://www.cartype.com/pages/3814/nsu_ro_80__1967
the Wankel is still a great concept
.