Lowe Brindfors and NTF Stockholm just launched this campaign showing cell phones in car crashes, or cell phones as crashed cars, to visually tell people to hang up while driving. (Is it just me or could that be Princess Dianas cell phone car crash?)
It reminds me of the lesser photoshop skilled Wataniya cell phone car crash which in turn reminded me of the Land Transport New Zealand & New Zealand Police "Sleep" campaign. where we see beds crashed instead. Aw.
Moral of the story: If a visual idea is nice and simple, you can bet money on it already being done.