I'm very curious what will happen to the drinking age in the US if full self driving cars ever come to be. The justification for adults age 18-20 being denied t

I'm very curious what will happen to the drinking age in the US if full self driving cars ever come to be. The justification for adults age 18-20 being denied the ability to drink alcohol was the outsized frequency with which drivers in that age group ended up in wrecks while intoxicated. If they're no longer driving, that restriction on their liberty is more difficult to justify.