I agree. I think the problem is that most people don't see (why would they?) the problem areas. Wheelchairs! What a pain. Try find one that answers a different need? It's impossible or super expensive. I have been pushing and pulling family members for years, across gravel, snow, rocks, stairs. Idea! Mountain bike. I wanted to find one with mountain bike tires. Seems easy. Not at all. I finally bought a cheapo fat bike mountain bike, removed the wheels with the axles, and mounted them to a normal wheelchair. It's amazing. We go off road. Across rocks and gravel. Into creeks. But you can't buy one.