Some good points grantp. The Silverstone Gantry shot is just my little point and press Olympus, which tbh is a little too wide angle for my liking. Certainly more so than the Panasonic I used to have. Anyway, it's good for family photos and pics of stuff to sell on ebay, and that's what it mostly gets used for!
As for taking snaps while actually racing... well I manage to switch my video between front and rear camera's while racing (using a toggle switch by the gear shift) so some sort of press button in a similar position is what I was thinking. Providing the part of the track I want the shot of isn't where I'm changing gear then that's do-able
And yes, it is the very fact that this isn't an easy thing to do that has me interested. Anyone know if there is an HD video which can be triggered with a remote switch to take a still?