I recently purchased the RaceLogic in-car video camera and data recording system. I probably should have read the instructions before using it for the first time. The GPS signal was weak and I lose locational abilities on several parts of the track, probably because I mounted the antennae incorrectly. And next time, I'll mount the microphone so it doesn't slide around and make the annoying noises you hear as I enter the corners. The system allows for customization of the screen, so there's yet another something for me to work on before next time.
Good fun comes at a price. My tires and brakes weren't in great condition before the drive and now, they're completely shot. Need to spend some time getting the car in shape for the next race.