Asking for directions

Billy is on holiday in Ireland, he's in Dublin and asks Paddy the quickest way to get to Cork.
Paddy says "Are you in a car or on foot?"
Billy replies "In a car."
Paddy answers "That's the quickest way!"
Paddy says "Are you in a car or on foot?"
Billy replies "In a car."
Paddy answers "That's the quickest way!"