Have you ever been to NYC? Do you have any idea how much extra vehicle capacity would be necessary for Uber to supplant the subways? A subway track has capacity of roughly 25000 people&#x2F;hour (112 people per car, 10 cars per train, 20 trains per hour) in each direction; that&#x27;s as much as 10 freeway lanes. Manhattan has 20 subway tracks across its width (5 lines, each with express and local, in 2 directions), so that&#x27;s at least 200 extra lanes of cars for Uber&#x27;s disruption to innovate out of nowhere.