I have one of these in the USA. It works.

http://www.portachopper.com

I have thought about bringing one over here but have not yet done it. The issue then is what to do with the car. In the USA, my wife and I use it to go the mountains to ride. She takes the truck to hit the local shopping or we park it at whatever hotel we are at and go riding from there together. I do not like riding from Dallas thru the Texas in 40+ degree C weather any more. Once in the mountains, I enjoy the non paved back roads a lot. I even take a few single tracks every now and then.

To be honest, I just do not enjoy my rides when the hassles exceed the fun. I am too old and tired to put up with it. I will continue to look for easier systems that do not have me on a major rant for over half the supposed enjoyment time.