When you first start out the car will be in EV mode, and the gas engine will not come on unless you press the accelerator pedal too far. It will stay in EV mode until the EV range reaches 0, at which point the gas engine will come on. It will now be in HV mode even though the HV indicator does not appear. In HV mode it operates like a regular hybrid, meaning that it uses both gas and electric. In HV mode the gas engine will automatically charge the battery as needed to keep it from getting too low, however EV miles will remain at 0. But that's no problem because the car works fine in HV mode. If you have never owned a hybrid before it may take some getting used to how the engine sounds in HV mode because the RPM's will sometimes seem disconnected to what you are doing with the accelerator pedal.I am a new 2018 Clarity plug in owner and am confused as to how to charge the battery while driving. I know the ICE is supposed to charge it, but I can't quite figure out how to make that happen.