Originally Posted by ukulele_ninja
I really cant rely on GPS which has not shown me to be 100% accurate.
It is very accurate within less than ten feet according to the satellite view, etc., that you have at the time.
If you can't rely on the GPS, then you can't do what you are proposing--to type in your odometer reading and have it keep your driven mileage. If 14.98 miles is not accurate enough, rather than 15.0.
If not GPS, how do you propose this to work?