I’ve never owned a vehicle I COULDN’T live in, and did.
1984 Toyota Truck with canopy (a.k.a. “topper”)
1994 Toyota Camry Wagon (a big mistake, but I could and did live in it for a week at a time)
2003 Toyota Tundra w/ canopy.
My current rig holds 500+ pounds of camping gear while I’m out for a week or two at a time.