johnrosa

Revealing mistake: A short shot from inside the bus looking forward at the moment of impact shows a wall of water fires up onto the windshield. This 'water barrel' technique is used to lessen damage and injury on many public roadways, and is used here to save the bus for use in another take - the one when it actually does hit the car a split-second of movie-time later. (01:42:15)

johnrosa

Revealing mistake: When the bus hits the car, the car launches into the air, propelled by a special-effects 'roll cannon'. The cylindrical slug that is fired out of the bottom of the car is seen rolling ahead of the bus toward the bottom of the screen. (01:42:15)

johnrosa