Audi had a prototype of the Audi e-Tron with a compact Wankel gas engine as range extender. That was in 2010, but it was cancelled and never entered mass produc

Audi had a prototype of the Audi e-Tron with a compact Wankel gas engine as range extender. That was in 2010, but it was cancelled and never entered mass production. https://www.carsuk.net/audi-a1-e-tron-wankel-range-extender-ev-trial-begins/ https://www.carsuk.net/audi-a1-e-tron-wankel-range-extender-...