October 16, 2010, at the entrance to a parking garage in San Francisco.
"Warning: Automobile fuel and its by-products contain chemicals known to the State of California to cause cancer or birth defects or other reproductive harm."
After reading this, I wonder how many people re-think chauffeuring their kids around in cars everywhere. Probably not many. Maybe they need to start putting these types of signs directly on cars, like they did with cigarette packages.