Revealing mistakes: In the scene where Mia is driving the Mustang up hills with her grandmother, it is inferred that it is a manual because it keeps drifting backwards on hills (it even drifts all the way down a hill and hits a bus). Also there is a close-up shot of her putting both feet on the brake pedal. Later in the movie when she's driving to the ball in the rain, the car stalls and she lays down on the front passenger seat. You can clearly see the gear shifter and it is an automatic. Therefore it wouldn't drift backwards on hills.
more
