I'm a rare 40 owner and am considering upgrading my battery to the 60, just to use the superchargers. I'd love to hear a few 60 owners opinions of thier use of the superchargers! Few questions: What % do you charge to at the start and charge to at each supercharger? How long do you need to spend at each charger (I assume longer than the 20 mins they mention)? Are there any charger locations you know of that push you to charge more at the previous supercharger?