"but I'm not sure it will be cheap enough to make sense taking a self-driving cab to work five days a week." Take into account the economic bifurcation of the

"but I'm not sure it will be cheap enough to make sense taking a self-driving cab to work five days a week." Take into account the economic bifurcation of the country, we have no shortage of (wasted) potential really cheap human drivers. A world where a cab driver is a middle class job is probably too expensive to take a cab everywhere unless you're in the higher upper class. But if there's only 100M jobs for 300M+ hungry people, no problem creating a permanent underclass living in misery to drive the few remaining middle class to work, until their jobs go away too.