MyMachWon

I was driving about 100 miles no signs of overheating at all. I pull off the highway and stopped through a drive through and suddenly coolant begins to leak out the elbow that connects the tube to the firewall. I pull in to a parking spot and it stops leaking still no over heating. Down the road is a ford dealership I pulled into it and they fix the elbow, they do a pressure test and see coolant coming from the front of the motor (I'm assuming the water pump) ever have this happen before? Anyone have any advise?