I understand there's some level of risk we all just have to accept from each other. I just don't agree that cars fall under that level. It's a huge step change from the risk that you or I will run into each other while walking down the street - suffering perhaps a bruise or two at worst - and the risk imposed on me as someone drives by in a large vehicle at high speed, with easily enough kinetic energy to kill & maim a dozen people and a building to boot.