http://www.slate.com/articles/news_and_politics/view_from_chicago/2015/01/uber_surge_pricing_federal_regulation_over_taxis_and_car_ride_services.html

New Year’s Eve saw the now-annual ritual of complaining about Uber’s surge pricing—its practice of raising prices when demand for rides outstrips supply. One passenger, for example, paid $125.90 for a 14-mile ride rather than the normal fare of $21.34. Uber warns customers in advance when it implements surge pricing, and it makes sure they tap their consent to the price multiplier on the app when they call for a car. Nonetheless, everyone complains about being Ubercharged.