I had an idea for knowing when people are coming (for taking their photos) this year. Cannibalising an iTrip or similar, and adding a simple tone to the input. Take a radio to the spectating point, and tune it into the frequency of all the radio transmitters. Everyone has one in their car transmitting a steady tone over the same frequency. When someone's coming, the radio you're listening to at the spectator spot will start to beep. That's the time to raise the camera, and take a photo. I think I'll try it out this year... Cheers, Andy