EDIT: Oops, I put this in the wrong forum - mods please move to the Model S forum. Sorry! I make a 600 mile r/t drive between So Cal and Mammoth approximately 12-14 times per year. Any current Tesla is going to require supercharging unless I drive slowly enough to make the entire 300 mile trip in an 85 or 90D - which I can't bring myself to do. My typical cruising speed on rural freeways is around 80 mph (which I've found CHP tolerates). There are two superchargers on my route between my home and Mammoth - the first about 100 miles into the drive and the second at the 200 mile mark. Is there any time savings from having the increased range of the 90D? Or can I just split my supercharging between the two chargers - say stop for a 10 minute juice up at the first one, and then another 10 minute charge at the second one? I don't care if I arrive in Mammoth close to the end of my charge because my condo complex has Tesla chargers in the parking lot. I only plan to keep my Model S 5 years or less because I assume that we are in for major range upgrades in the next few years and also increased autonomous driving capabilities. I also have a sports car for my real "spirited driving" so the wimpy 70D motor doesn't concern me (although lack of passing power does). Thanks for any advice!