There was a company that made some very smart conversions for wheelchair use. Converted Honda 1000s, and Suzuki Bandits. A few years back I say a Ducati based sidecar outfit with a flat sidecar. I thought it looked really nice when stopped. The rider heaved a folded wheelschair up and flipped it upright and slid off the saddle onto the wheelchair. He did a 180 on the spot and wheeled himself off the sidecar platform. All done in the time it takes to read it. The bike was modified, and the sidecar and all the equipment was built by the rider.