A garage mechanic comes out to rescue a broken down car. Out of respect for other drivers the mechanic leaves his hazards on while parked on the side of the road. The exhaust from the broken down car has fallen off and needs tying up before the car can be driven onto the mechanic's trailer. The mechanic tells the car owner "As it is only 3:00pm I should be able to have the car ready for you by 5pm". At 5:10pm the mechanic rings the car owner. "Sorry I didn't ring you by 5:00pm, but I only got back to the garage 5 minutes ago. "Why, what happened?" asked the car owner. "My vehicle battery went flat, and I had to ring the garage to ask for another mechanic to come out and rescue me," replied the mechanic.