I remember the first time I heard about Uber. A friend told me that "there is this new mobile app that lets you hail a ride, anywhere, anytime, pay with your credit card, and a car shows up in a matter of minutes." My initial response was "wait, you get in some random person's car and trust that they will safely take you where you want to go? Hmmmm. …" And then I tried it. There was no turning back.