have been loking on the web and aim are producing a great new camera,it has GPS data logging and can overlay the info onto the screen and can be shown easily on a 50" tv,
http://aim-tec.co.uk/smartycam/ theres a link to it,it also featues a g sensor,also the best bit using a bridging cable this can be linked to you ecu and shoe you all the data from the sensors that your ecu measures