When Duncan meets Owen, Owen is in the middle of a game of Pac-Man on Level 1. He says he's never made it to Level 2. When we see the screen a number of dots and one of the power-pellets are missing. When Duncan loses Owen's last life, still on Level 1, the screen shows an earlier point in the game.
Even though the Buick Estate Wagon used in the film utilized a 455 hp gasoline powered V8, near the end of the film when Steve Carell's character is fueling up, he is shown pumping diesel fuel into the tank.