I work at a major transportation company as well. We've got over four thousand trucks on the road now, and myself and one other guy handle the breakdowns on the road, thirteen hours a night. We don't have any trucks over three years old, so you'd think they would be reliable. Thankfully for me they aren't. The feds pushed the emission standards too quickly in my opinion, and the manufacturers had to cobble together whatever they could to meet the new standards if they wanted to keep selling engines, regardless of reliability. My company also seems to enjoy testing the latest technology on its trucks and trailers, so that's another bit of job security. They will also hire just about anyone and train them, so we get some real rocket scientists out there. That would explain the line under my name above this post.
Having done this for too many years, I can tell you in all honesty, there is no such thing as a good-looking truck.