Actually, the last rig I drove was a Freightliner cabover pulling a bulk pneumatic tanker. That was the one that ended my career when I crashed on a desolate road in the middle of a blizzard. It took them an hour to get me out and I spent three weeks in the hospital. It had a 300 Cummins, 7-speed Spicer transmission, and center-point steering. The sleeper was a twin and the interior of the tractor was all tuck-and-roll. The interior was a lot nicer than the exterior, but nothing like today.
Overall the rig was a beast. Prior to that I drove an IH, Isuzu straight truck, a KW, a Ford 9000, and an Autocar. The KW I drove early in my career was a K-100 similar to the one on "BJ and the Bear." It was an Aerodyne with the upper and lower bunks. The most comfortable one was the Ford 9000 cabover. It had a huge (for the day) sleeper and the entire cab rode on air-bags. It took some getting used to, because the cab rolled around a lot. The Autocar had the most horsepower, but then it wasn't stock.
Here's an image of the one I crashed. If you look to the left of the radiator grill, you can see where the owl went through that I hit one night:
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