Factual error: The briefcase containing $1 million was full of $100 bill straps, two columns by six straps or $120k per layer. Eight layers would have been 4 inches tall, not including the four straps left over. The top and bottom portions of the case were equal depth and only the bottom half was full. The case would have had to be approximately 8 inches deep, which it evidently was not, to hold $1 million.
Factual error: When the Lincoln Continental Convertible was rolling backwards down the hill, Nick put his hands on the trunk to try to stop it. A car, especially one weighing 5,000 - 6,000 #, would easily knock over a person and possibly cause serious bodily injury (even death). Nick's attempt to stop the car by holding onto the driver's door handle would also be futile and potentially dangerous. (00:37:47)
Factual error: Almost all the semi-tractor trailers on the Interstate passing by are from the 2000s, not 1995, the timeline of the movie.
Factual error: Jenny would not have received a letter telling her she had been successful in applying to Oxford University as shown at the end of the film. As an undergraduate she would have received a letter from one of the Oxford colleges to which she had applied informing her she had been accepted to that college.
Factual error: In the scene near the start of the film where Lai Lai gets off the train and looks at the card for the hotel it shows the first part of the postcode as 'M14' but the hotel is in Middlesbrough where postcodes start with 'TS' - M14 would be in Manchester.
Factual error: In the beginning during the gas station scene, the timeframe of the movie is supposed to be Sept 2003 but a number of late model (>2006) Ford, Subaru and Honda vehicles are seen driving by in the background.