I've got a receiver hitch on the back of my Leaf. I welded up a rack to carry my Scroozer on the back. The extra weight on the rear bumper kicks my head lights up a bit. I bought an Air Lift 1000 system for it with wireless on-board compressor. The Air Lift site had zero data on which system...
I have one of the first Juice Boxes ever produced. It's rated for 60 amps at 240 volts but they never got the bugs out of the wifi on the prototype run. It's theoretically capable of 14.4 Kw so I installed wiring and breakers heavy enough to support that. My Leaf draws just 7 Kw on a good day...