I just charged at the Hyatt Regency on Congress, just south of town lake. There are three High power wall units on the 2nd level just passed the entrance. I was somewhat disappointed in that the units are not rated at 50amps. Two of the units displayed 50/64 amps at 208v. This gave 25 miles per hour. The third unit, nearest the entrance, displayed 32/32 amps at 208v and gave 17 miles per hour. What's the deal? Aren't these supposed to run at 50 amps 250v and deliver 50 miles per hour? I had planned on the higher rate and am now going to have to scramble to get enough range to make my trip successful. The lesson: don't asume that the rated range will will always be available.