On the top right side, click on the first photo in the photo gallery to see a picture of the Smart car in its trailer garage. The page says it has a motorized lift to load and unload the car, and that the space could optionally be configured as a second bathroom instead.
My guess is that this would probably be the most expensive accessory you would buy for your Smart.
You really have spectacular motorhomes. And this is a great idea, each country finds the way to take profit about the smarts.
The parking zone in the states are not hard like spain, but always exists one place for the smart.