First of all, people said no to regulation; and second, they said, "Well if you regulate cars to do this and to minimize total harm, I will not buy those cars." So ironically, by regulating cars to minimize harm, we may actually end up with more harm because people may not opt into the safer technology even if it's much safer than human drivers.
Entonces, irónicamente, al regular los autos para minimizar el daño, podríamos acabar con más daño porque la gente no adoptaría esta nueva tecnología aun cuando es mucho más segura que los conductores humanos.