submersible pumps 22 24 26 28 located in each of the storage tanks 12 18 a nozzle valve assembly 30 for dispensing fuels to an automobile or approved storage container a keypad 32 or other input device for permitting customers to initiate and pay for fuel purchases a computing device 34 and a display screen 36 for displaying information to customers the submersible pumps 22 28 are entirely conventional and are provided for pumping fuels and additives from the storage tanks 12 18 the nozzle valve assembly 30 is also conventional and is operably coupled with the submersible pumps 22 28 by appropriate fluid carrying conduits the keypad 32 or input device is coupled with the computing device 34 for permitting customers to select the type of fuel desired and to pay for the fuel as discussed in more detail below the computing device 34 may be any programmable device such as a processor or controller coupled with memory the display screen 36 is operatively coupled with the computing device 34 for displaying information to customers as described in more detail below the computing device is programmed to receive inputs from the keypad 32 and other input devices and to control operation of the submersible pumps 22 28 display 36 and other components of the pump assembly 20 the pump assembly 20 may also include a conventional.