You know, in principal - I like the idea of not allowing smoking in cars, just like I like the idea of having to have a handfree/headset to use your cell phone...
But it really bothers me that people lack the common sense to make the correct decision about smoking around their kids. It also bothers me that the government seems to think that making another law is solving the problem. It isn't solving the problem. It is treating a symptom of the problem. The problem being the tobacco industry and the addiction it fosters(I smoked for years.)
I had a discussion with DH about this need to protect us from ourselves...in Portland, cops have been looking into parked cars to make sure there are no valuables in them, if they find something in them - they then send a letter to the car owner - after running their plates - to give them "tips" on how to not have their car broken into.
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I don't like it when people smoke around children. I hate it - it makes me nuts. But all this is going to do it make smoker continue to scream about their "right" to smoke being violated. It isn't going to get them to quit - nor is it going to keep their kids from ingesting the smoke at home - which is much much worse as it is in the clothing, the carpet, the beds, their hair, etc.
I just don't think this is going to do much in the long run, but cause a lot of court battles and make people even more defensive of their smoking. And when you make a smoker defensive, the tend to smoke more. At least every smoker I have ever known or dealt with does, me included.