So a drunk mode that need the drunk to acknowledge that he&#x2F;she is drunk and voluntarily initiate drunk mode?  I don&#x27;t think drunks are the best judges of whether they are drunk, or their driving ability.  The law agrees.  For drunk mode to be safe, to properly make a dent in the drunk driving problem, it has to actually prevent them from taking the wheel even when they want to, especially when they want to.  Otherwise all the confident drunks, the alcoholics, wil keep taking to the road.<p>This is important because so many of the &quot;human factor&quot; mistakes cited by autodrive proponents actually begin with alcohol&#x2F;drug use.  If the human really cannot be trusted, the car has to take away his authority.