Don't know much about over the road trucking but I do know about working on a Coke truck. My advice on that is don't make a career out of that. I spent thirteen years on one. My knees and back will never be the same. Fortunately I got out of it before I totally ruined myself.

There is a upside to that. You learn how to deal with people. That has helped me in my real career tremendously. You also make good connections for future job opportunities on a route truck.

Good luck