Deliberate mistake: There are no yellow/amber lights as Patrick drives Sam and Charlie through the tunnel. Yellow/amber lights are present as soon as drivers enter the tunnel - a warning to slow down, as well as help drivers' eyes to adjust to the light level inside. I presume it was better to have all white lights while filming (and traffic was controlled). (00:27:33)
The Perks of Being a Wallflower (2012)
1 deliberate mistake - chronological order
Directed by: Stephen Chbosky
Starring: Paul Rudd, Emma Watson, Logan Lerman, Ezra Miller
Revealing mistake: Right at the end of the film when Sam, Patrick and Charlie are driving through the tunnel, when Charlie begins to stand up on the back of the truck, look slightly beneath his flapping jacket and you can see the safety wires attached to him.
Trivia: Brad lied to his friends about how his face got banged up, saying he was jumped by some kids outside of the "O." The "O" refers to the Original Hot Dog Place, which was located close to the University of Pitsburgh's Cathedral of Learning and was very popular among the students and others. It had been in operation for about 60 years but closed on 4/18/20 due to the Coronavirus pandemic. Pittsburgh native Mark Cuban (owner of the Dallas Mavericks) tried to buy the "O" but it was sold to a chain. (01:09:52)