This request is by no means unique. After driving the car for a couple months, I can say it would be immensely useful to have a persistent HV mode (in fact if I designed this car, it would default to HV, but let folks choose what they want, and keep their setting). EV mode is good for about town, and it starts in EV mode each time. Econ setting is persistent. But for some darn reason, HV is not persistent. Further and I don't know why, if I engage HV manually at low speed, it just disengages all by itself and stays off. Perhaps its why folks in the forum recommend you short-press HV when getting on the freeway. For me personally I can remember to press (or re-press if need be). My wife pressed HV in town prior to a 100 mile freeway trip. She claims at some point the car automatically disabled HV and went back to EV. She failed to notice, so the EV range went to 0 for most of her trip. Of course the initiated know, the main downside of gas-only after EV range gone is a high-rpm sounding engine (some call 'angry bees') but the car is otherwise responsive. On her trip, she did remember the long-press HV option, did that, and got some electric range back so she could drive more quietly once in-town.