The act of unlocking

A customer arrived at an automobile dealership to pick up their car, They were told that the keys had been accidentally locked in it.
He went to the service department and found a mechanic, Mr Santa working feverishly to unlock the driver`s side door.
As the customer watched from the passenger`s side, he instinctively tried the door handle and discovered it was open.
"Hey," he announced to the technician, "It`s open!"
"I know," answered Santa.- "I already got that side."