If Google/Tesla/Apple/$company_working_on_self_driving_vehicles offered to defray/pay your insurance bill and operational expenses, would you let them kit out your car(s) with a gajillion sensors and recording equipment, and send all that information to them? Or if someone said if you did it for X years, you get $Y towards a brand-new car, where Y is 50K+ USD. You still drive manually like you normally do, but everything possible about your driving is recorded, and fed into their trainers. If they could get an orders of magnitude larger training corpus, I wonder if they will start to cover more edge cases.