The mere exposure to cars can cause injury or death. How about getting run over on the street? How about getting poisoned by exhaust fumes? It is an imminent th

The mere exposure to cars can cause injury or death. How about getting run over on the street? How about getting poisoned by exhaust fumes? It is an imminent threat to all people. Driverless cars are likely to be safer, and hopefully eventually cleaner, but ask the people who had to breathe that crap back when there was lead in gas whether exposure to cars is dangerous or not.