Anybody who smokes in such close proximity to their children, doesn't care about their kids health. You can't wait for 20 darn minutes till you're out of the car to smoke? Give me a break, smokers. That nasty habit killed my husbands mother. Also, my parents smoked until I was about 9 and up until they quit we were sick all the time.
Growing up, most of the adults in my life smoked, and they have yet to link chicken pox, the mumps, or scarlet fever to SHS exposure. Other than those childhood diseases my brother and I were rarely if ever sick.
OTOH, I have a niece that was never exposed to SHS and had chronic respiratory and ear infections growing up, she was also a rabid anti-smoker, until she got into her 20s and realized the pack of lies she had been fed by the fanatics.