When Tush returns from the wedding, look through the window to the outside of the donut shop, and you don't see the Lean Green Machine food truck parked outside even though it was there seconds earlier in the exterior shot.
This episode involves events happening a few days before and one day after Tush attends a Sunday, April 8th wedding. Thus, Arthur successfully completed his driving test and bought a new car on Monday, April 9th. However, the previous week's episode not only aired on Monday, April 9th but was about the Cubs' Monday, April 9th home opener against the Pirates and involved a full day of Arthur trying to find an affordable ticket. Thus, this show now has two completely different stories happening on the same day of Monday, April 9th.
Early in the show, Arthur tells Fawz that he'll never get his parking spot in the alley. Arthur rented Fawz that spot in Season 1 - Wage Against the Machine for $275 per month to help Franco get a monthly raise.