Factual error: Several times during the film Sid and Tim talk of taking learner drivers out at the same time. This would be difficult as their driving school only has one car.
Factual error: The panels on a caravan are made of fibreglass so when Bob crashes his car into the caravan it wouldn't do as much damage as it did to Bob's car.
Factual error: Cagey Joe's pullover definitely looks more 1976 than 1926.
Factual error: When a Rear Admiral and Captain are walking together, the Captain's epaulets are the wrong way round. A cardinal sin in the Navy. (01:30:00)
Factual error: St. Ives is invited to sit in a Lincoln Continental. When he does, one of the owner's subordinates opens fire with a machine gun having what appears to be a 50-round clip. Problem is, he fires over a hundred rounds.