This is a complete list of Hertz 24/7 locations along with their geographical coordinates. Hertz 24/7 is the automated car-sharing service of Hertz Rent-a-Car. Simply register and make a booking on-line, over the phone or by using the Hertz 24/7 app. After receiving your confirmation, enter your access code into the reader behind the windscreen to unlock the vehicle and go. Hertz exited the rental-by-the-hour business in the US on Aug. 31, 2015.