The red Alfa that Able was driving was visibly damaged from hitting a tree the night before, yet when he drove it to work the next morning, there was no damage to the front of the car at all
The red convertible car that Able was driving had the top up when he started to drive to work. In the next scene, the top was down.
In the final part of the film, when they're at the theatre to watch at the screening of "A Trilion Leaning Towers" it's clearly dark, but when they get out, after only a few minutes, there's daylight already.