I noticed this supercharger appear today on-screen and its definitely online. I was at like 60% soc so I couldnt really get any good showcase of the speed. A few others were charging as well. Looks like this is totally open.
To the right is a few L2 chargers (looked like chargepoint?) but I didn't think to look at them in detail.
As others mentioned, parking here is free and the garage is in the SW edge of the parking lot wedged between the target and Windy City Fieldhouse. Lower level so just turn right when you enter and you'll see it. It's a pretty good location sort of tucked away at the bottom of the garage so I'm hoping the chance that these get ICE'd is pretty low