newtonsfirstlaw -
I would be verrrrry happy with a 45 MPH speed limit on LA freeways, but I don't think that'll happen any time soon. In keeping with the critical mass concept, I think you should initiate a "snail convoy" or "turtle convoy" logo. The idea is, if you see someone with this logo on the back of their car you pop in behind them, give them a snail/turtle signal, and create a "slow car convoy". The car behind you can't get mad at you because it's obviously the fault of the car in front of you, and the car in front of you is "protected" from their wrath by you.
Turtle Convoy ... Rest of world
...
The ones behind you might be mad, but you would be saving them gas (if not time).
Now, if only it were that easy in the real world,
CarloSW2