In Belgium, the police have been doing this for some years (it's called "blokrijden": block driving). The idea is to increase the capacity of the motorway by having all vehicles drive at the same (reduced) speed, to prevent the harmonica effect: the constant faster/slower driving resulting in a jam.

The police did this at least a few times a month when I lived in Maryland. Two cruisers would simply drive at 60 MPH on Route 270 during rush hour, followed about every half hour later by another 2-cruiser block. I clearly remember being annoyed at first, then realized there were never any accidents or "meaningless" traffic jams.

Here in Santa Fe reps from the city gov and admin came to our neighborhood association meeting. Among others, they talked about "moving speed bumps", that is, promoting going the speed limit. Many of the city vehicles have stickers on them to that effect.

We have that here as well, they're called snow plows.

It's about time. No one drives the speed limit. It's as if all those signs were mislabeled as speed "limit", rather than speed "minimum". We make them, saying one thing, yet do another.

I am the best driver in the world, ever. I get to drive over the speed limit, because I can handle it and I've gotta get places and screw all of you. I justify it all by saying that I'm driving "with the flow of traffic"(tm). So... anyone gonna cheat a little on his taxes this year?

Don't try this at a go-cart track. :-) Aside from getting booted off the track, the guy bumping you from behind (me) will also get booted! LOL

Isn't 55 the speed at which you get the best mileage? I seem to remember that we lowered all the speed limits to 55 way back, after the oil crisis of the 70's. Then we forgot, and raised them. The people who made this video appear to be too young to know any of this.