I might bite the bullet on this. I can use that engine for an Ekranoplan I designed, and I have wanted to build (and own the real thing) for a long time. This is a modern one too. There's a guy in town who has one, There's actually a drive shat that connects the sidecar wheel to the rear motorcycle wheel, and the model depicts it incredibly well. I think it would be pretty hard to get stuck in one of these. I had a sidecar for 7 years, A Velorex/Kawa sidecar, I still kick myself in the butt for trading it. I did get a massive amount of R/C stuff that the time was when digital proportional radios came in, and this stuff was all new, a few radios, boxes of servos, .5" bore engines, 10" props and two planes ready to fly. Still, all in all, I should have kept that sidecar. I used to ride all year long, snow or ice, the bike wouldn't teeter, might slide, but was always controllable.
The front wheel on my Suzuki went through tires like crazy though. it was from hard braking, they would cup. It's better to have a dedicated rig, you can use square profile tires, better traction too. I could disconnect that side car in less than five minutes, reconnecting was less than 10. You would not believe how many people will jump into a sidecar for a ride.