But you see the loophole, don't you?
"Sir, before you enter the Main Street Pub you have to complete this short 'Member Application Form'... yes, just sign, the rest is filled out for you."
Banning smoking in cars is just plain stupidity. Although I'm torn on smoking with kids in cars, because they can't just get another ride or whatever.
It's also more complicated than a simple vote swing. The differential is in part based on who cares about the health effects and who does not.