Other mistake: In London, the red telephone boxes seen are human-sized, so it is impossible for them to be big enough for the cars to even get into.
Other mistake: In the scene in the restaurant, where Lightning McQueen just hung up with Francesco, Sally says "You never bring him to any of your races" as a reference to Mater, even though Mater was at McQueen's last race in the original.
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Suggested correction: McQueen didn't bring anyone to the first one; they all just showed up as the race started. The assumption is that since then, he hasn't invited Mater due to embarrassment of his public manner (judging by "this is exactly why I don't bring you along to these things").
