Steve I had a digital camcorder about a year or so ago, but it broke. I think this solid state thing I've rigged up will work. I'll try it and have a look, you can check it at VIR if you like. The SD card comes right out of the data box and into my laptop in QT format, so we should be able to have a look at the track.
Biggest problem I had was a 5V supply for the data box. I had to take a 5V solid state reference supply and use it, but the current draw was too high and it overheated. So, I took three of those, ran them in parallel, and diode isolated them so they wouldn't "fight" each other. I mounted them together and put a 12V mini fan on them. So far that seems okay, but only driving the car around will tell. If it goes bad it is protected with a push button circuit breaker so it shouldn't be an issue.
R