How car safety became a major selling point

In the past, car safety was an afterthought, but it is now top of mind for many automakers. Many companies now advertise safety ratings from groups like the Insurance Institute for Highway Safety and the National Highway Traffic Safety Administration. But the road to safer cars over the years has had many stops and starts, with opposition from both inside and outside the industry. Today, increasingly modern systems raise a new set of safety questions as automakers seek to reduce traffic deaths.