Right now, only Tesla. But, that needs to change. The topic is covered here: http://myimiev.com/forum/viewtopic.php?f=12&t=2767. While it's true that only Tesla cars support this rate of AC charging, the hope is that the other automakers jump on and make their cars support it, too. I'd support CCS if the AC side can also do 80 amps (and a CHAdeMO adapter is made for us). But that's where my dilemma is, hence the existence of the linked thread.
I've been giving myself a headache reading a thread on TMC about plugs, primarily an adapter to allow non-Tesla EVs to use HPWCs. I've been trying to figure out the best way to deploy a real charging network in and around Pittsburgh. What we have now isn't too bad (there are plenty of places worse off), but the network is made up of mostly car dealers outside of the city, and the only way to know if they work is by either making a gamble and driving to it or go by recent Plugshare check-ins. The Chargepoint network is great in that it shows available/in use, as well as more locations supporting reservations. I don't know if it can report if the station is out of commission or not, but I imagine that it could. The downsides are that none of the Chargepoint units support the full 80 amps, and the units are made in China. Meanwhile, Clipper Creek units are made in the US, and their CS-100 supports 80 amp charging, for the same price as a comparable 30 amp station.
I need to talk to the higher-ups at my work, too, about adding a charging station. Right now, there are three plug-ins in the company, my personal i-MiEV, a company Volt, and another employee's personal Volt. Myself and the Project Manager driving the company Volt both work in the office, the Volt driver driving more than 80 miles a day. He currently plugs into a 120 volt outlet, which almost fully recharges the Volt. However, his parking spot (not marked) is taken by someone else driving an ICE at least several times a month, meaning he's driving 40 miles home on gas. I don't charge at work often, but I need the charge when I do. I would like them to get a Chargepoint CT4021, but the prices on this unit is crazy ($7,210). But, a dual post station would allow one installation to charge two cars.