I downloaded the data off my G2X and merged it with the in car video with a program called Trackvision. It overlays a "dashboard" on the video showing, in my case, engine rpm, speed, lap times, and G-forces. Each ring on the G-circle is .5g. This is the best resolution vs. file size that I've been able to come up with so far. It's best viewed when you select "original" in the View Size: drop down menu just below the video window.
This was my second best lap of the day time wise but definitely my quickest. If I hadn't been slowed down by the Miata before the last turn, It may have been my best lap ever at BIR.
http://media.putfile.com/Brainerd---...---Trackvision