[kezo]

Can you remember the the Mazda RX8, it was powered by a Wankel Rotary engine, which unusually high 8500rpm.

The MX30 would have a small rotary engine to act soley as a range extender rather than power the car.

https://www.autoexpress.co.uk/mazda/mx-30/107991/mazda-mx-30-r-ev-revealed-novel-rotary-range-extender

Mazda RX8 2003/12