I recently drove a Karma Revero - it’s a hybrid (PHEV). The gas engine isn’t connected to the drivetrain, it’s just there to charge the batteries - can go ~370miles. Then fill up.
It has 3 modes; battery only (80 miles), ‘sustain’ - where the engine keeps the batteries charged as you cruise, and ‘sport’ where both batteries and engine are maxing to provide as much power as possible. Quite quick!!
I liked the configuration - plus it’s a really nice looking car.
Post a picture. I won’t look it up online. Don’t want to get slammed with hybrid ads.