Thanks for your input. Great suggestions!
Locations: I have almost never ever taken a car to a specific location for a photoshoot. Virtually all my shots tend to be at car shows or other events. I wish I had thought about this some time back when I was single and had all the free time in the world. Now I have to somehow squeeze time to drive my Ferrari on the weekend. No time for photoshoots.
But let's see if an oppportunity presents itself on a future drive.
From a photo focus standpoint, I think I will focus more on detail shots in the future and not so much on the whole car. I think that will keep my interest up as I hunt for the unique features in each car model.