I've looked over all the specs on the Garmin and TomTom websites and can't find an answer to this question. Do typical automotive GPS units let you record your travels and download the data to your computer, or do only the ones made specifically for biking and hiking do that?
2006 BMC Pro Machine - SLC01 (07 Record), 2007 BMC Team Machine -SLT01 (07 Chorus), Reynolds Tubular Wheelsets
Automotive GPS devices will allow you to record your "track" and download to you computer. The information included usually contains: location coordinates, heading, speed, altitude, leg length, date time stamp. I use Garmin devices so others may vary.