The government could step in, though. In a few instances, federal law has overridden state law to protect the public. Under the 1986 National Childhood Vaccine Injury Act, for example, vaccine makers have special protection. Consumers can file injury claims through a dedicated office of the U.S. Court of Federal Claims, and vaccine makers pay out without admitting fault. The act seeks to protect the small number of people hurt by vaccines while encouraging vaccine makers to keep producing the drugs, because to prevent disease an unvaccinated person must be surrounded by thousands of vaccinated ones. Autonomous technology is similar: It won't make us safer until it's in most vehicles. Maybe it deserves special treatment to get it on the road.