FWIW, behind the wheel, the alcohol makes him much more dangerous to the public than the pot.
However, both pale in comparison to the cell phone user.
/s ......sort of...
Who in turn, pales in comparison to every driver transporting small children.
Not even a little sarcasm, other than that the notion that one's mind can not be trained to function when conversing with an unseen communicant attempts to deny millennia of military training regimens - and the training of every pilot civil or military in the western world.
And if the people hawking that socialist drivel actually believed it - they would push for the removal of radios in emergency vehicles as well.
Not all of the chicken littles are part of the global warming scam.