Speedometer uncertainity

[badbillybiker]

Hello... lurking about and wondering why no one is using a hand held
GPS unit or the DeLorme dash units to figure or compute their speed
readings? I have 2 laptops running gps and a hand held gps and they all
give accurate speedomter readouts....Accurate to within 3 feet.. I use
them all the time on my trips from The mistake on the lake to arcadia
etc. My speedo checks out... I am positive I have an accurate speedo.
FWIW.
BadBilly
PS:You are allowed to bash.