A pilot is about to depart in his plane when he meets a young woman on the airport concourse. She has missed her flight.

“I can give you a lift if you like,” he says.

“But you don’t know where I’m going,” she says.

“It doesn’t matter. I can drop you off wherever you like and continue to my destination without going out of my way.”

This seems preposterous until he explains where he’s going. Where is it?