Have any of you lucky owners driven in real mountains yet? I'm wondering how it will behave.
Going uphill: When the battery runs out, will it get pretty slow, just running on the gas engine? Or does the charger keep the battery, and the speed, up all the way to the top. If so, how does it do that?

Going downhill: What does the regenerative braking system do with the energy after the batteries are all filled up? Any sign of a problem?