I have had one of these A Frames fitted to my smart I have been using it for the last 2 years with no problems at all yes it is very light but it is well made and a doddle to fit should you requier any more info please ask
I also have one of these A Frames from Smart Tow for my Smart car. It does the job nicely.
However before you have it fitted to your car have the welds checked on the passenger side where the universal swivel screws in as this is an add on as I found to my subsequent horror.
I towed my car to a campsite and found on going to rehook up after the weekend of jollying around in the countryside that I couldn't screw back in the uninversal swivel tothe passenger side as the socket it screwed into had dropped out and was lost. The weld had broken and it appeared it had been cracked for some time as there was a fair bit of corrosion at the joint. All it really is is a nut welded in place.
I shudder to think what might have occurred if it had actually broken while I was towing!!!!
The agent came and met me and took the car away to replace the the car fitting with a better connection. Lets hope it does the trick.