Stopped in Grants Pass Oregon to top up with 20 minutes, while eating at Black Bear Diner. A lady in a Model S remarked that her charger wasn't working. We just chalked that up to a fluke. The little circle turned green and flashed so we went inside and ordered. Luckily I checked my iphone, and wow, it wasn't charging. Went outside and replugged, now it was charging. Went back inside, and nope, not charging. Switched slots, and same thing. Finally on the third space, it worked. What do you folks think was going on? Memorial Day weekend? While we were there, another Model S pulled in and experienced the same thing.