I first learned of the damage the constant vibration of truck driving will do to electronics when my new printer stopped working after only a few months. It was a great printer - I had the same one at home and it lasted for years. However, the neverending bumpy ride doesn't work well with electronics with delicate circuitry. Frankly, most of those types of office equipment aren't made to carried and used in a truck.
I started to add padding around my new printer which helped extend the life. I had some cushions and old towels that I used to protect the printer from the rough ride. Some companies make anti-vibration padding like what is pictured below. I always carry my laptop in a cushioned bag and let it set on my bunk for an extra soft ride. I keep my iPad in the cab area with me in a briefcase that sits on my air ride passenger seat. I never leave it on the floorboard or dash. Every bump in the road would transfer to the iPad if I didn't protect it. Also, keeping your electronics out of the sunlight is always a good idea.
Look around the interior of your truck and start noticing the items that need extra protection. If you have electronic items that are not being protected adequately from the bumps and vibrations, they will definitely not last to their expected life cycle.