I'm picturing a seat supported by 4 robotic legs and controlled by a handheld joystick. The seat could be self-balancing, self-stabilizing for a smooth ride, a

I'm picturing a seat supported by 4 robotic legs and controlled by a handheld joystick. The seat could be self-balancing, self-stabilizing for a smooth ride, and have embedded cameras, LIDAR, etc. to prevent collisions. It basically walks itself, you just nudge the joystick to tell it which direction to walk in and it finds a smart path in that direction. Probably beyond the reach of current technology, and impractically expensive for the time being. But in the long run, I can imagine that the cost of giving every wheelchair user something like this might be cheaper than the cost of making buildings accessible. Most relevant for newly built cities I guess. Basically run the numbers on the cost of providing exoskeletons vs the cost of making everything ramp-accessible and providing accessible transport. The exoskeleton could sprint over to your house when you summoned it ;-) Possible disadvantage: shortage of exoskeletons during city festivals when everyone wants to go out and there are lots of out-of-town visitors?