In-Car Entertainment and Bathroom Breaks
Ellis says that your dog can "hold it" about as long as you can. If you'd normally stop every three to four hours, that's probably suitable for your pooch. Older dogs, however, may need more frequent nature breaks.
Kearney always starts each long road trip by giving Eko a new bone or toy. "It's like how you give a kid an iPad; it's going to distract them for a few hours." And most dogs will nod off after an hour or two anyway. You know how your dog mostly wiles away his days snoozing on your sofa? He's probably going to do that exact same thing on your backseat.