A number of possibilities.
Terrence has shifted to the other side of the rear seat, or moved to the front seat next to Wanda. As you indicated, to get a better view of her driving. Both positions he's out of the picture.
Or/And.
An event has already occurred in the car (in the back seats?), and Wanda has dropped off Terrence at his home.
Gauging Terrance's "spent" expression in the second image, this may be possible. Although at the third render, Wanda looks more tense and concerned rather than remorseful.
Hmmmm?