When the lead character is driving towards the garage, the car is actually turned off; the meters of the mph and rpm clearly stand at zero while the car is "driving."
When James Lafferty drops off Danny Glover after visiting the gym, Glover's hand on the son character's shoulder disappears and reappears with each camera-angle change.
When Jim's father and Grandpop come to Papa's to offer him a loan, Grandpop's shirt changes from a white collared shirt to a solid-colored shirt, then back again.