I was on a business trip & took my Tesla. My plan was to charge in Bloomington, IL in order to get home. When I plugged in, the numbers said 5/6 miles/ hr in the charging rate. Long story short, because it was 30 degrees outside, the battery takes 1min/degree to warm up & the car must warm up before receiving supercharge. Needless to say, I hadn't planned to need to charge a full hour to get only 40-50 miles of charge. This was a HUGE inconvenience and Tesla needs to improve this. How many of us own cars in climates other than CA where a NORMAL winter is 30 degrees? If it's going to take 2 hours to get 100 miles of charge at supercharger, tesla needs to put that info out there instead of claiming charging at superchargers is incredibly fast. Only if you are in Spring weather. It's the first negative thing I've ever had to say about my Tesla, but I will not be taking it on road trips where I don't have a 2 hr window to charge at each station. Sadly, I will use my ICE car.