Mouse over the car and you will find out what service is required.
Drag and drop the car according... (More)
to the needed service.
The customer overall level of satisfaction can be seen by hovering over the car and viewing the star. A full star means the customer is completely satisfied.
Each bubble indicates which type of gas each requires.
When one of the pumps runs out of gas, just click on gas truck and reserves will be transferred to the pump.
