TRAXX if you have a droid phone look for an app called Speed Gauge. It's pretty accurate and reads to tenths of a mph. Grab a suction cup mount for your phone and clogged speedos wont be a big deal anymore.
I spent most of my money on booze, broads and boats. The rest I wasted. - Elmore Leonard
I had always thought that there was nothing quite so sad as an abandoned boat.-Terry Hayes