I drive a tractor-trailer 60-70 hours a week. I have the same shots except from about 4 feet higher in the air!
Most of my shots include part of my truck. When I first started shooting from my truck, I worried about window frames, mirrors, winshield wipers and other stuff showing, but decided that unless I was planning on cropping almost every shot, I'd better give it up. Now, I'm happy.
Besides, the photos show my perspective, which after 25 years behind the wheel is normal to me, but might be interesting to others (or not).
Just for the record, though, if anybody (including me) thinks this is a safe practice, it absolutely is not. While you're shooting, you're not driving. No matter how quickly you shoot, it takes longer than almost every accident. Lecture over! That said, I still love it.