To be fair, this is kind of neat-- it means the Tesla system fails "open" and, as long as there's power at the supercharger station (and all the electronics work, of course), the car will charge. I had some anxiety the first time or two I used a supercharger-- "what if it doesn't work?" -- but so far, that's been completely unfounded. When it 'fails', you get a free charge! I once found a supercharger that said "limited service" which concerned me. All it actually meant was, it charged at 75kW instead of 150. And my charge was free.