[Evolved]

The problem isn't training people to behave like ants for efficiency reasons. That shouldn't be difficult. The problem is people not planning ahead which translates to slamming on the brakes to make a lane change to exit, not speeding up quickly enough to merge smoothly with traffic which translates to the braking shockwave effect on the cars behind them, and finally, people's self-serving attitudes that translate to cutting other people off/weaving in and out of lanes/not letting others merge/etc.

TL;DR - This has been rehashed over and over but the same results are these: Ants do what is best for the colony. People do what is best for themselves.