UBER is a mobile app that allows you to request car service in the click of a button via iPhone, Android, or web-requests. Your own private driver arrives within 5-10 minutes like magic. Simply press a button on your phone, and wait for your luxury UberBLACK car or mid-range uberX vehicle to pick you up. Your credit card is on file, so there's no need to carry cash. Uber has created a more efficient means of transportation, making Atlanta more useful, pleasurable, and safer to move around in.