Hannigan Motorsports had some really nice sidecars on display in Indy. Most of the models are under $4,000.00 and have some really nice features. You can get radios, hard and soft tops, custom paint and other accessories. The black one connected to the Kawasaki is both the sidecar and a new suspension and steering for the bike. It's not cheap at almost $18,000 but it's a nicely engineered package. Sidecars have never really been very popular in the US but maybe with the higher gas prices that will change. You don't have to worry about about falling over on slippery pavement and you certainly increase your passenger carrying capacity.

The four wheel setup for the Gold Wing? I'm not sure what the target audience would be for that. Why not just buy the Mini and be done with it? Or, just punch the windshield out of the RV and roll down the highway. At least you can sleep in the Wal-Mart parking lot with that rig.