The procuratorate is using its supervisory power to go after officials who fail in their duties to prevent environmental and food safety accidents. The suggestion is that there is often a corrupt official behind such instances, but it could just as easily be that a head must roll when the public is unhappy with these highly prominent areas of social concern.
Drunk driving is a crime, not just an administrative violation, and penalties can be harsh. Thinking of quickly drinking a lot of Baijiu after you got pulled over, so that the cops can’t determine if you were drunk when you were actually driving? Think again- this interpretation actually addresses that situation.