One more thing to remember is to buy the 10A German made mobile connector which plugs into the usual sockets (most malls only have this for the time being). The included charging cable don't have any adapters. Costs $3,700, and they can only accept cash/cheque at this moment.
In my case, I am not sure it is worth it. 10A @220V is 2.2kW - or less than HK$3 per hour of electricity. Justifying this on free charging would mean payback at over 1,200 hours of shopping mall charging. Perhaps 3 hours at a time is 400 trips to the mall, or about 6 or 7 years for me. Just not worth it. If you can charge at the office, or at home, I wouldn't bother with 10A 220V.
By comparison, 32A 220V single phase is 7kW (three times better), and the cable for that is included. Better to choose places with 32A, or supercharge (135kW).