After Diana puts the seat belt on Rover before driving away, the next two times we see the robot, sitting in the front seat of a moving car, the seat belt has disappeared.
Wonder Woman breaks the power lines to stop the digital timer but the timer remains lit. It would have both stopped counting down and gone dark without power.
The breaking points on the electrical wires are clearly visible before Wonder Woman breaks them. They also remain taut rather than dropping away.
At the last scene, when the Rover offers a cup of coffee to Diana, you can see that the person who grabs the cup is wearing a shirt with gray sleeve, while Diana is wearing brown.