
Deliberate mistake: The license plate on Teddy's car is constantly changing. When Leonard reads his card of the plate number, it could end either with 7IU or 71U since his I's and his 1's are written in the same way. When Natalie gives him the information, the car's registration ends in 7IU. Even the car's plate is both 7IU and 71U. Leonard's tattoo of the number ends in 71U, but he says 7IU. (00:44:17 - 01:46:55)
Suggested correction: The physical plate isn't constantly changing; it's framed in close-up many times. At the end, Lenny writes with two identical strokes that could be interpreted as I or 1. The tattoo artist writes 1s, and on that basis, Natalie magically finds the right guy, who has one 1 and one I. The plate with two 1s appears only once, very briefly, in the Mountcrest Inn scene. I hadn't noticed after at least five or six viewings of the movie, and I was always very alert to this error, which is not deliberate!
If you admit that there is, in fact, a mistake in the movie pertaining to the license plate (as demonstrated by this photo), why try to correct this? Why not just amend the wording to make it more accurate?





