Interesting thing about these little GPS units or at least the one I have.
It not only records actual MPH (my Honda wagon speedometer is 3 MPH faster then actual) but it records max MPH, total distance travel and a couple of other items that don't interest me.
What I want to do with it now is tie it into my lap top with my Delorme program for travel instructions.
But with the lap top, I need 115VAC so bought a inverter but just haven't figured out how to mount the whole system into my motor home.
Need to do a little bit of "Rube Goldberg" engineering for that.