Re: toll lanes
'In a perfect world where everyone lived in Megacity One and worked in Megacity Two, then all trips for all people would be vectors from Megacity One to Megacity Two'
Actually, in a perfect world, everyone would both live and work in the same city, obviating the need to commute to work at all. All attempts to manage commuter traffic by whatever means of transport are, in reality, just treating the symptom. The disease is the perceived need to travel.