It can take a dozen or more buses, trucks and vans to put a production on the road. Drivers, mechanics, and sometimes electricians all are needed here. As anyone who has toured before will attest,tour schedules suck, one night you are here, the next night you are suppose to be 1000 mile away and the following night you are to play in a city 50 miles away from the place you started. Moving all these people and equipment can be a nightmare.  I have been stuck in a bus that blew an engine crossing over the Rockies, no fun.