Stopped at Barstow on my way back to Surprise, AZ last Friday just before noon. All slots full and one car waiting. Got to my turn after about a half hour wait. I started out at the lower charging rate, as we last two cars that started charging were sharing "1" charger. I figured I needed about 240 miles to make it to Kingman (wind and hills), so it took about 50 minutes to gain that range. While I was charging, at least 3 and maybe at one time, 4 cars were in line to charge. Long holiday weekend and lots of traffic to Vegas I was told. The charging queue was mannerly, but I'd say the folks that were already charging when I first showed up were not closely monitoring their charge state as they kind of wandered back with their packages from the factory outlet shops. Of course there may not have been a queue when they started charging. It worked fine for me, but I stayed with my car during the charging session so I could go as soon as I finished getting my mileage. Anyway, I got to Kingman with about 18 miles left, and that was with some drafting behind some semis and a few miles driven at 55 over some of the last hills before Kingman.