This morning while on my walk, I started thinking about the camping trailer we had when I was a kid. I googled one wheel trailer when I got home to see if anybody still made them. They do! It turns out the one we had was a Sears Tag-along wood model which my dad made a top cover for and added brackets all over the outside for various camping implements. We didn't sleep in it just carried all the camping stuff in it. The point is that a one-wheel trailer would be perfect for a Mini with a mini-fini rig. The two attachment points mini-fini has would work great with the trailers dual hitches. These trailers stay aligned with the car and the wheel swivels. The ultimate single wheel trailer system.