A Project for Musk
Tesla has been working for years on self-driving cars. A simpler project with a smaller but still significant market would be a self-driving wheelchair. The idea occurred to me talking with a woman whose husband suffered a serious stroke a few years ago, leaving him with a functional mind but imperfect control over his body. A motorized wheelchair would let him move around, but his vision is too unreliable to make that safe. If he could just tell his wheelchair to take him to the home office, or the dining room, or ...
It should be much easier to make than a self-driving car, since a house is a much less complicated environment than the highway network — and it could be programmed to the map of a particular house. I haven't found any figure for total sales of motorized wheelchairs but there seem to be a lot of firms selling or renting them, so my guess is at least tens of thousands. And it would make people more confident in the ability of Tesla to solve the harder problem of a self-driving car.