Well, you do get locked up with an open container or being under the influence. I guess the fact you're allowed to transport it from the store is your point? I don't really have a point here, but I'm sure more times than not the pot is being smoked while driving or you're under the influence afterwards and behind the wheel, like alcohol, you'll get nailed. 99.9% of the time they get caught is for the scent being in the car, which means they've smoked it. Rarily do you ever hear of someone getting randomly searched for no reason at all and finding they had pot on them.
For the record, I do not smoke pot, nor do I see the point for recreational purposes. I've got too many bills to waste on that shit. My alcohol consumption has gone down 90% since I graduated college and had kids, so it's not simply the fact I have a bias against pot, I just can't afford it even if I wanted to do it. Add that with my huge student loan debt and I just don't have the disposable income to waste on that crap. I think drugs should be made legal, that way to drive out the cartels and foreign influence in our country in regards to drugs. Tax the hell out of it (most being foreign created and shipped in) and cut us a better rate on our income taxes. Let people OD and let whomever destroy their lives, because it's apparently happening whenever they want anyways, so making it legal could potentially stop all the massacres in Mexico and in our own country. Create a supply beyond demand and watch it not be as hip and cool anymore. BUT, as of right now it is illegal, so you gotta abide by the laws or stand up and do something against it. OR, do it and risk the consequences. It's pretty black and white to me at the moment when we're talking recreational use.