Really awesome simulation of this problem. I constantly think about how traffic would be optimized once full automation is possible and this is a nice way to play around with the levers the AI would optimize.

As highway-driving AI approaches perfection I'd expect:

- Acceleration/nausea approaches zero

- Number of lane changes approaches zero

- Distance between cars approaches zero (when necessary in crowded areas)

- Maximum speed approaches physical limit

It will be satisfying to watch these happen over time.

edit: formatting