Wait, you mean more people are testing positive for cannabis now that it's legal? You don't say.  And what a sharp increase: 627 to 880.  And how many people moved to Colorado over that same time period?  And wait, you mean a criminal who stole a car got in an accident in said stolen car?  Must have been the pot, not that he was driving in a stolen car. 

What a stupid fear mongering pile of bs.  Now, excuse me, I have to go to work because not everyone who uses cannabis is a car thief.