It isn't a binary choice. For example you pay for an individual ride to work, and while on the way the system says "would you accept another rider for a $5 dis

It isn't a binary choice. For example you pay for an individual ride to work, and while on the way the system says "would you accept another rider for a $5 discount and an extra 2 minutes in journey time?" So many variations on this theme is possible making maximum utilisation of the fleet of vehicles, and trading off pricing versus convenience (and likely luxury) all the time. I'm looking forward to "dining cars" where you get to eat a nice meal while in transit.