Someone is going to reply that it DOES do this, but I'm not talking about when the battery is low, I mean ACTIVELY and PURPOSEFULLY charging the battery...to FULL. I can imagine that in town, I could see driving on battery almost all of the time when the car is moving, and then when stopped, charging the battery with ICE only, and then only on EV again when moving, etc. As it is today, I run as long as I can on Battery, then ICE MUST come on - USUALLY when accelerating and wasting gas, but the new way would be so much better, no?