Funny! I went to charge at EA Burbank today, and they were doing some maintenance. The guys let me peek inside, and the Tesla battery/inverters were right there!
SO... I'm lucky! My office is a mile or so from a 350kW charger. I have used it twice so far, and it is actually awesome. The first time, I was confused that after I came back to get my car, it was charging at 101kW. I didn't realize that when you pass the 80% mark, it slows down quite a bit...