Calif. bans smoking in cars with kids

The AP reports:

California motorists will risk fines of up to $100 next year if they are caught smoking in cars with minors, making their state the third to protect children in vehicles from secondhand smoke.

Gov. Arnold Schwarzenegger on Wednesday signed a bill that will make it an infraction to smoke in a vehicle if someone under age 18 is present. But the traffic stop would have to be made for another offense, such as speeding or an illegal turn, before the driver could be cited for smoking.

The ban, which takes effect Jan. 1, joins a string of smoking prohibitions adopted in California, including a ban on smoking in enclosed workplaces and within 25 feet of a playground.

How long before even a cigarette butt in a car that drives children around will be illegal?