This is a project I started almost exactly a year ago now with the idea of selling photos to participants at track days, without them being restricted to buying small prints and reducing costs to both myself and the customer in media/postage etc.
Anywhere here is the first 'ready' version, let me know what you think

I made it all myself from scratch and had to learn every technology behind it from scratch
http://www.trackdayphoto.co.uk