They stop for gas and lunch on their way back home. The road is long, and Harry has spent the ride sitting silently in the backseat, looking uncertainly out the window; Remus and Sirius have let him be, knowing that this must be a big change and he may need time to process things. Unfortunately, there is more Harry needs to learn before they get home, and the plan has been to have said conversation over lunch, where they can speak to Harry face-to-face. 