I know the "show hauler" type custom coaches using mostly Freightliner chassis often have a heavy duty lift gate that can handle a Smart with no problems. I don't think most " toy hauler " type Super Cs would have the capacity and weight limits to deal with a Smart, and I know most of the lift gates are chain drive electric units which have a limit of about 1600 lbs usually. This is not nearly heavy duty enough.
One can always get a heavier class lift gate I'm thinkin. I don't like the lift gate system for loading a sidecar rig or a Smart myself. I'm stickin with a ramp. When I visualize backing the Smart onto a lift gate I get a touch of the vapors. The deal with getting it on and off the gate and getting into and out of the Smart and operating the lift alone gives me the creeps. It would work real nice for a motorcycle or such, but I prefer a ramp for the Smart.
I've loaded several times from wet grass and a couple times where the coach was at a height that gave the ramp some extra angle... but never had any real problem getting up the ramp. If ya doddle around getting up into the coach the Smart will indeed give a bit of wheel spin when it gets on the metal of the hinge area. If you think a Smart can't spin it's wheels ya would be mistaken. As long as ya go up the ramp and don't stop and restart again there isn't any slippage even with a wet ramp and tires.
The Damon happens to have a recessed style of ramp where the garage floor is sloped down the last couple feet which allows the ramp angle to be a bit less even though the garage floor is quite tall off the ground. Backing in up the ramp is a bit "blind" but can be done. I suggest a "stop chock " be used in front so the driver can know exactly where to stop when loading without a helper. Getting the car centered on the ramp and clearing the mirrors and stuff is not as difficult as it might seem, but some care must be taken. There is plenty of room for the car, but there is pretty much one sweet spot to park the car in the garage so the driver door has room to open easily AND there is room to get to the opposite side tiedown stuff without crawling around on the floor and gettin all sweaty and dirty from the tires...
Hey , this stuff ain't fer SISSIES. We are professionals, don't try this at home kiddies...
he said, as he slid down the side of the ramp.....
:-))