[xbmcuser]

If we have self driving cars the roads in cities will get a lot wider as no side parking in many streets many 2 lane or 1 lane would become 3 or 4 lane streets as well. Would allow for dedicated bus lanes as well so traveling by bus could also become a lot faster.

[dragonwriter]

If we have self-driving cars that aren't parked the same way as human-driven cars, but instead drive unoccupied to park somewhere else, then the extra space from reduced roadside parking will largely be occupied by extra traffic lanes to accommodate the added deadhead traffic.