Following this thread 'cause I'd like to find the same thing. I couldn't find it in their specs, but that GoProCamera that operator linked to must have a timestamp. Every digital do-dad has a timestamp these days.
operator, the gps thing goes like this:
1) you synchronize the time on your camera (helmet cam, whatever) and your GPS receiver.
2) Then you enable 'tracks' on your GPS so that you essentially create a digital breadcrumb trail of wherever you ride.
3) Take pictures along your route.
4) When you get home, you can use software to combine your GPS track with your photos. The photos have a timestamp, so they'll get 'geolocated' in the right spot on the GPS data. You can then pipe this data into Google Earth, Google Maps, Yahoo Maps, Flickr, etc...
It's super cool...