Cars cause extensive pollution-induced illness and social problems. Road accidents cost about $90 billion annually by killing over 40,000 Americans, about as many as diabetes or breast cancer, and injuring 5 million more. Globally, car accidents are the fifth- and will soon be the third-largest cause of death. They currently kill a half million people and injure 15 million more every year. If automobility were a disease, vast international resources would be brought to bear to cure it.