People need to look at what was happening here. Whether pot is legal or illegal, the man would have been breaking the law to be smoking pot behind the wheel.
Also if pot were legal, would esctasy? Cocaine? Heroin? LSD? STP? GHB? Hashish?
If pot is legalized, (and "taxed"), would the ATF replace the DEA for enforcement?
"Solving" one problem begets another. None of my discussion even addresses possible health effects, car accidents (DUI), or underage use. I don't even want to get into that (personal responsibility addresses some of that).