Revealing mistake: When Scotty tells Dan to test the bus' aerodynamics, the bus passes the same scenery multiple times.
The Big Bus (1976)
1 revealing mistake - chronological order
Directed by: James Frawley
Starring: Stockard Channing, Rene Auberjonois, John Beck, Joseph Bologna
Continuity mistake: When the bus is brought out of the hangar for its maiden trip, the top of the front of the bus just clears the top of the roof. When it parks outside, the rear section has a glass roof which wouldn't clear the roof without damaging either the bus or the hangar roof.
Parking Lot Doctor: Please sign this, absolving me of any responsibility for the results of treatment.
Kitty Baxter: But you're a Doctor.
Parking Lot Doctor: And I intend to remain one.
Trivia: At the Iron Man's house, there is a painting of the Hindenburg airship disaster. Rene Auberjonois (Father Kudos) had previously starred in the 1975 movie The Hindenburg as Major Napier.