I forgot to answer part of that.... ;-)
There are several variations in the coach chassis and GVW and capacities even within the several models of Outlaw coach from Damon. If you get the heavy-duty chassis option on the WORKHORSE chassis, then it will carry a Cabrio just fine. MOST of the Outlaw coaches will NOT meet the requirements according to the specification sheets. Check the details of a given coach, and make sure you load the coach within the specs as regards both total loading and also the balance.
If your coach has the 2500 lb garage load limit and a 1000lb per axle ramp weight limit and a garage length of 10.5 feet, then yer good to go ASSUMING you don't exceed the chassis axle load rating which is really a limit on the type of wheel used on the rear axle I'm thinkin. You may need to carry heavy baggage in the FRONT storage areas for balance.
On my own coach, I haven't run into any problems with either load limits or with balance with or without the Smart.
I'm just sayin..... There are several models of coach out there that will carry a Smart with ease. The SMALLEST of these is probably a Damon Outlaw on a heavy-duty Workhorse chassis. The large class-a DP side would be a Travel-Supreme ME garage coach which is in the 43' bracket. The " hauler " types of Super-C would be like a Haulmark, Concept Showhauler or such.. which will fall into the 49' bracket. The haulers are VERY NICE with a nice floor level master bedroom in front of the garage and have a side door to help with loading and such. Ya have to get the heavy-duty electric lift gate though. The Smart is too heavy for the standard 1600lb chain drive lift.
The Travel-Supreme is GREAT, but no longer in production. ( and expensive)
I love the Concept Showhauler with 12' garage and master bedroom... but it's just too freakin LONG to get into most nice campgrounds or parks. Nice for goin to the races or sumthin though... We'll keep the Damon until something better for the money comes along.
YMMV