Well, this will certainly get 'em to slow down...

[AndrewJ]

So, we want people to slow down and thereby conserve fuel, correct?

I think we should lobby our collective congresspersons for the (link NSFW) Danish system

scroll down to the end of the post and watch the embedded video.

*Warning* I didn't embed the video here because of it's, shall we say, gratuitous display of the female chest-area.

[Mike]

Haha - I'm not saying it wouldn't work but...

(editing your post to add NSFW)

[MetroMPG]

Oh, those Danes.

Hilarious. And it would be perfectly legal in Ontario! Although impractical for half the year.

[Silveredwings]

What a lovely view.