Thanks for the comments, everyone...
I'd love to say that the reflections on the side of the BMW were a deliberate thing on my part, but they weren't. I didn't even notice it in the original image, but on processing the pic in Photoshop, it scrubbed up very nicely.
I've taken alot of inspiration from the many excellent (and some frankly amazing) galleries on this site, so will pay a visit to as many as I can in the following days and weeks 👍