Just about to dive into the usual commute home, when I found this interesting site. An engineer made an observation in his own commute home. He 'saw' the exact analogy of simple fluid dynamics with all the other cars around him. He experimented by being a 'lubricant' to the usual stop-&-go dynamics. Using best judgment & observation he kept his vehicle at a deliberately slower but 'steady' rate of speed to uniformly distribute the flow of his car lane. There maybe a large gap but he avoided the intermittent use of brakes, but he helped maintain a more efficient rate for his lane.
Might get some frustrated overtakers & tailgaters (LA traffic) but I'll give it a try tonite.