I agree it wouldnt do much harm, but it also wouldnt do much good.
The same idiots will still be idiots weather theres an ad showing someone driving their corolla fast or not.
I think decent laws are where they should be starting;
1) jail for repete drink drivers (action off their cars and give the proceds to rehab programs)
2) jail for people who drive while on drugs
3) jail for fuckers who are reckless and kill or cause seriouse injury
4) crack down on unroadworthy cars
5) up the speed limit to 130 - 140kph on freeways
6) Change current 100kph limits back to 90kph
7) change current 50kph limits to 40 and current 60kph limits to 50
In australia we drive way to slow on freeways/motorways and way way way to fast in towns/cities and country roads which are no better than cattle tracks.
The GOV is gonna ban ad's, all this does is give the impression they're actually doing something that will justify their existence.