When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Just 1 mph difference on a gps doesn't necessarily mean one is going faster
then the other... Lot's of variables involved when calculating speed with a gps.
Here are two in my car, side by side, and they show 1 mph difference:
I told Paul yesterday that George and a few others could show us how it is done.