Deliberate mistake: The huge bruise on Tommy's face, from the board hitting him, disappears in less than a day.
Deliberate mistake: Why would Richard, big Tom's 'right hand man,' have to drive his cherished vintage car on a business trip that would take him hundreds, if not a thousand miles? He surely could have taken a company vehicle. Of course, then they couldn't do the 'car slowly and humorously being destroyed' shtick.
Answer: A number of online explanations said it was because Lowe was already contractually tied to another project while this one was being filmed. Another explanation is that he was left uncredited so his appearance mid-film would come as a "surprise" when the plot took a different turn.
raywest ★
I read where his contract with the mini-series "The Stand" left him unable to take any credited roles. However, it seems "Tommy Boy" began filming after "The Stand" aired and he was credited for his role as Jesse James in "Frank and Jesse." However, it seems to be an Internet story where the source isn't credited.
Bishop73