> So if someone routinely hauls a couple mountain bikes in the bed of their truck or gets a few 2x4s from the lumber yard it wouldn’t count.

Even if that’s the case, the truck owners doing this probably don’t need a full size truck. A 90s-era small truck or maybe even a kei truck would suffice, and yet more often than not the trucks in question are the likes of F-150s.

Agreed, unfortunately small trucks are increasingly harder and harder to find. A 90s truck also won’t have the amenities that a modern truck has.

I think if they are just hauling mountain bikes, they could get a small hitch installed and purchase a high-quality bike rack. A roof rack can carry 2x4s very well.