[quote=@Araby264]
[@Etcetera]
[I]less [/i]traffic 
And they are already a thing, but i mean a city wide network of self driving cars.
[/quote]

I'm talking about the world being 100% self-driving. I think it'll eliminate traffic because there will be no wrecks, everyone can move at the same speed and stop at the same time, and servers can precalculate routes to take. No variability.