i agree with you generally. let's put express lanes underground (for both cars and trains), since they're prioritizing getting places quickly over easy access.

i agree with you generally. let's put express lanes underground (for both cars and trains), since they're prioritizing getting places quickly over easy access. but to be fair, that's more (sometimes much more) expensive. not only because of the digging required to put the lanes/tracks underground, but also the extra things like ventilation systems and pedestrian exits/corridors.