@robsonfletcher You park your car in the garage for 8 hours while you sleep. You do not need 200 amps. I can charge my Tesla M3 on a 40 amp (NEMA 6-50; 32 amp continuous load) circuit between midnight and 4 am usually with time to spare. On the rare occasions when I get home from a long trip with 2% left, it might not be back to full (80% for daily driving) but very easily enough to get me to work and back the next day.