Yesterday I got bit... I was driving to the Ardmore, OK supercharger (on US 70 between Waurika and Ringling OK if you want to see on map), it was about 40 miles away and I had 70 miles on the battery. Seems like an fine margin, but do not really have a choice since there are not any other superchargers near. Well I got turned around on the highway. A tanker truck had overturned and the road was going to be closed for the rest of the day while they cleaned up an oil spill... With the required U turn and new route it would add about 60 miles to the trip... So, I turned around and started on the new route. The map of course kept wanting me to do uturns. Eventually the map changed to the new way and it was already flashing that I would have negative battery. Used search on the cell phone and found an RV park. Had to pay $20 to rent a stall and charge for about 2 hours using the 15-40 plug. So, it took about 3 hours longer (hour driving and 2 hour charging). Lesson learned: when they finally get the Wichita Falls superstation built (still says 2018 estimate, hopefully next year), I will always stop for 10-15 minutes to get an extra 50-60 miles added. My driving route is Norman, OK -> Wichita Falls, TX-> Ardmore OK about 230 miles in an AWD model 3, usually gives me 25-30 spare miles range (highways speed limits from 65 to 75 on route). When winter comes I will probably have to slow charge at one of my businesses for a while (have a 14-50 plug) in Wichita Falls.