I think this strategy works super well for electric semis.

I think it is being proposed for electric container shops as well.

Finally, I had hopes those ultra compact rotaries would get commercialized as rechargers for phevs and EV range extenders (I think there was a darpa project mentioned two years ago for a novel inside out rotary).

Honestly the emissions for a recharger that gets used maybe 5-15% of the miles driven by a phev aren't that big of a deal.

If it speeds hybrid and full electrification, and the engine runs in a pretty ideal rpm that is lower emission anyway, then civilization is coming out ahead.