"We took actual cars in an actual plane and we flew up into the sky and we threw a bunch of vehicles out of the back of a plane" James Wan told the New York Times.
"We had sky-divers chasing after these cars basically trying to get the shots for us".
"It's one thing to have cars going from building to building to building" Chris Morgan said about one scene in the film.
"The only reason you accept it in our movies, honestly, is because you care about the people inside the car" Mr Morgan told ScreenCrush.
"You're worried for them, you're excited for them, you're with them" he said.