Distance Based trigger

Hello, I would like to ask if there is a plugin that will trigger the camera based on distance traveled?

Or alternatively would it be possible to modify an existing plugin to do this?!

I have a Ricoh X and use it for taking pictures like Google Street View.

For the time being I am using the TR-1 Remote to do this only, but a) this method does drain the battery quite fast…. b) you might miss a pic or two in the process….

Automatic distance based triggering would be quite nice in our use case…

Let me know if anyone has any input.

Regards,

Efstratios