Can someone explain this one? I upgraded this past week from the 60 to 75, so I could go on a roadtrip. Got to try out a supercharger for the first time, which was awesome. Given that I charged to 100% and drove for awhile, I dropped down to 55% and was tracking the "since last charged" mileage and kWh used. At 55%, I had used up only 30.5 kWh. That makes it seem like I will only use a little over 60 before I get to zero. Shouldn't it be 75?