Borrowed a GPS the other day, to calibrate my speedo.
Grate fun can be had driving along country lanes trying to mentain a constant speed
Ironically it's seems that I have the only acurate speedo that Rover ever made, it was shocking spot on undr 40 and only out by 1mph above.
However the mileage was totaly out, and I'm pleased to say the my car has done 5k less than the clock reads
Does any one know what these units are like to interface to, as I wouldn't mind having a 7 segment display on my dash to give me an exact read out of my speed.
:edit: Not a mis-spelling this time, I wrote completely the wrong word instead.