I have adjusted the saturation as the levels were really bad and looked really flat, but not much apart from that.
This is the first time that I have attempted this kind of shot so am reasonably happy with the results. Agreed that practice is the most important thing and I need to get the hang of "tracking" the cars as they go past. I was messing around with the shutter speed most of the time and the above photos were taken at 1/160, maybe a touch too low on reflection, I think 1/250 would have been adiquate.
Thanks for the comments all!
