You shouldn't always expect your friends to help you out.
Steve, who has a mechanic friend, is driving home when he sees a tire pressure warning light and realizes that he has a flat tire.
Steve wants to get his car fixed.
Steve calls a mobile repair service and asks them to come out and help him.
Steve calls his mechanic friend and asks him to come out and fix his car.
The mobile repair service comes out and has Steve back on the road within half an hour.
The mechanic is out on vacation and can't help Steve with his problem.