I kind of wonder how all that truck is a benefit to the service customer. How many items loaded into that truck never see daylight? How much extra charge is put against mileage to cover the extra expenses of running that truck? How many times has that crane stayed parked in the cradle because it doesn't have the capacity to reach or lift a counter weight or an engine? What are the fall hazards of getting into and out of the bed of the truck, not to mention having to stand on steps just to get access to the top of the tool box? How much does a mechanic have to hassle with licenses, insurance, government regulation and such just to step into that big fancy white elephant.
I had a colleague I would meet on the road from time to time who used a regular boom truck with boxes he grafted onto the flat bed of the truck. Bigger boom, more reach and lift, a flat deck to load components onto and purpose built steps to make it easier to get up and down. His point was that his truck cost less to purchase and outfit and had a much great capacity to accomplish the type of service work he did. He also had a drive train that would run the truck over the passes at the speed limits instead of crawling in the right side lane.