[polynomial]

Given that ants don't have this problem, won't driverless cars be able to adopt ant-like traffic protocols to eliminate congestion?

cf. http://www.phschool.com/science/science_news/articles/ant_tr...

[samatman]

Ants have no momentum, to a first approximation. It's not at all clear their algorithm would scale.

[lisper]

> Ants have no momentum

And collisions between ants are not catastrophic.