Also, driving at zero miles per hour reduces car accidents to zero... obviously this is good to reduce accidents but frankly mildly annoying for the vast majority of people actually trying to get somewhere. They quoted percentage changes, but if it went from a huge number to a smaller number that would be interesting, but if they went from 0.01% to 0.080% but now a million people have to spend another 20 minutes in the car, I question the net human value. At some point I'd rather live my life not sitting in a car an extra year of my life and risk a minor accident.