BIG JAKE: "Memorizing 12 images, four for each of the three locations, plus which car is going where, is a bit of a chore but no big deal. Think chess player. What gets me is that none of the guys in the car found any discrepancy with the mark he made, such as "hey, I marked the upper right-hand corner, I know I did, so why is the mark over here?"... or "I didn't scribble a blob that would've looked like that." Maybe they were paid?"
I have often wondered the same exact thing - "Hey, I marked the (fill in the spot), but the mark seems to be different part of the page. How?" But nobody ever came forward with the question; so maybe they were paid off. Who knows. A lot of these clues are very cleverly left up to the audience to analyze. That's why I love this forum so much. We can analyze and over analyze anything on here and it's fun!! Good catch Big Jake.