I must have missed that one Jay but you did not.  I am not sure what the "it" that is already coming around is though, because impaired driving has been around for a long long time.  I would suggest also that not everyone that smokes grass feels the need to drive or even own a vehicle.  Voters said that they wanted to regulate grass like alcohol.  Apologies but I have not read your writing at all and have not even heard of your name but I can respect your comment as coming from someone that has apparently been rather close to the action.  A dose of angst about driving is a good thing.  The roads are quite dangerous.  Singling out, however, a voter-driven initiative to accommodate a freedom of action for some - consuming grass in this case - seems to have only yielded more push-back and foot dragging and paranoia from those that opposed the measure.  There -will- be those that choose to drive impaired but I still fail to see your link regarding this articles relevance to that.