OK, after 2 months of ownership and close to 1500 miles I finally took my MS on a short road trip from Atlanta to Chatanooga. Here are a few thoughts, questions, etc. It was a last-minute trip so I had done very little planning or research. I had also already been out driving that day and hadn't recharged (I charge at night for the lower electricity cost). So, first problem, I hop in the car and realize I'm at 58% which the trip planner said would get me there with 8% to spare. We start driving and within 5 minutes of our roughly 2-hour journey the estimated charge when we arrived to the supercharger in Chatanooga was down to 4%. I'm curious why this dropped so fast? Was it because the 5 minutes was mostly stop & go and stop lights and it started assuming we'd have worse than expected energy efficiency? So my wife couldn't handle the stress and we diverted to the Atlanta supercharger which was about 15 miles out of our way, then charged to 80%. Would it have got better if we had kept going (e.g. returned closed to 8%)? I was a bit worried that the high speeds which I'm used to driving will unnecessarily drain my battery and I'd have to drive slower to hit the estimated numbers. But surprisingly enough I drove 14mph over the speed limit virtually the entire way (in GA there are no points for that speed) and ended up only a few percent lower than it said I would have been (after the supercharger stop in Atlanta). This meant I was going 84mph for most of the trip. I have my speed alarm/cruise control set to 14mph over the speed limit which is really nice. I really do wish that if you have cruise control set to the same number that this speed limit is set to, and then actual speed limit changes, that the car would adjust or warn you or something. I cruised by a cop and was hit by laser and only afterwards did I realize I was going either 19 or 24 over (can't remember now) because the speed limit was randomly lower there. I didn't get pulled over, fortunately, as I have defenses against that sort of thing Finally I think the supercharger in Chatanooga is unusual since it is in an airport parking lot. It wasn't very convenient to get into our out of and there wasn't much to do there. I assume this is the exception and not the norm? Overall I was very impressed with the entire journey but I wish I could have a few software tweaks that would have improved it: 1) Auto-adjust for changes in speed limit as mentioned above. 2) If I plot my route while supercharging then start driving, the gray line on the energy screen's trip tab shows the pre-supercharging plot. But once I start driving I'd prefer it to swap to the estimate when I unplugged the supercharger (does that make sense?). I just canceled the navigation and restarted it so no big deal. 3) I'd love to be able to do waypoints in the nav software #3 is the big one for me. See, when I was at the Chatanooga supercharger, I needed to charge enough to make it to downtown for dinner and then all the way back home. But there was no way to do that. So I had to guess as to how much charge I really needed.