Thats the reason why I am bulding my own instrumentation and datalogging package. Not only will I have up to 8 virtual gauges (and alarms, maybe more since I can set up derivative gauges like HP and Gs) on my in car flat screen but I can also record shitloads of data for later analysis at home (40 GB drive, give or take a few for some MP3s).
I also got a wireless device for it so I can download music to my car while its in the garage and pull data to my home PC. I figure I might also get lucky and find a few hotspots around town so I can browse while stuck in traffic.