Having the camera at the ready right next to you will forever change the way you see things around you while driving, Simon. You'll come to appreciate red lights for a change, for one thing.
I love the photo of the mare. Why not take a print out and tack it up in/near her stall? It would be nice on the wall of your home as well, of course, but may as well let the subject get a little enjoyment out of it.
Click on the image to view it in a larger size
SMC Takumar 55/1.8