When Sebastian, Charles and Mulcaster head to Ma Mayfield's, Sebastian starts the car with a half-turn on the starting crank. In actuality, it takes much more effort than that. A four-stroke engine requires at least an intake stroke and a compression stroke before firing, and that's one full turn.
At Sebastian's trail for drunk driving, the minute hand on the courtroom clock is at 20 minutes past the hour, but the hour hand is three-quarters of the way from 10 to 11. (This mis-setting of clock hands is a common goof in movies.)