The term “king of the road” has been used to describe everything from ultimate muscle cars to the raddest of station wagons to giant SUVs, but let’s face it—royalty comes with more than two axles.

If you’re the kind of person who needs to haul really big vehicles with your camper, a toy hauler might not cut it. Instead, your RV of choice might be what’s known as a toterhome. These custom rigs ...