.So you have a device like a car camera that also has the ability to record the coördinates / location of the vehicle e.g. GPS waypoints.
The site will take your gps file and overlay it on to google maps allowing you to see where you have been and if your device records it, the speed you where travelling at.
I love this site it is simple to use and give great results.
I’m posting the link on my site in a bid to help it survive for free.