A few basic laws would drastically reduce the mortality rate: cap gas tanks to 5 gallons, cap max speed to 25 mph, require monthly psych evals at DMV, and weekly checkins with a local sheriff, and a hotline to report suspicious neighbors that look unstable and should rather take a bus. Ideally we would just ban these machines of destruction: when this country was founded, people used horses, so I see no reason why anyone should feel entitled to own a car.