The big rig truckers are still the holdouts for CB radio use or has that died off substantially?
Most still run radios. A large number are running power mics and echo boards and 500+ watt cheaply made Chinese linears, so they are barely understandable, and bleed 3 or more Channels both directions.
I've got my trusty old Cobra 29 with a 12w final and a 102" whip antenna on my truck, and the antenna pretty much just stays tied down and the radio off unless I'm heading out on a road trip or going off roading.