Well, since you asked......... I had to look it up because I had forgotten myself. Just don't use it very often. I wonder how hard it would be to get a speedometer recalibrated for this. Top speed would be close to 400,000 for me. Woohoo. I have gotten pretty good at kph to mph conversions with my Euro speedometer so I guess I'd get used to it eventually.
Cut my pizza in 6 pieces. I'm not hungry enough for 8. Man, I'm such a geek.
Wikipedia is great.
"An absurd unit of speed often misquoted is the furlong per fortnight, which converts to:
0.0001663095 metre per second (in SI units)
0.0005456349 feet per second (in Imperial units)
Thus:
a car travelling at 60 km/h (37 mph) is travelling at a speed of 100,214.7 furlongs per fortnight;
a Boeing 737 cruising at 420 knots or 216.2 m/s (i.e. typical 0.8 Mach cruise) is travelling at 1,300,013.7 furlongs per fortnight;
one furlong per fortnight is 0.166 millimetres per second, which would be barely noticeable to the naked eye.
Retrieved from "http://en.wikipedia.org/wiki/Furlong""
Furlong - equivalent to 660 feet, 220 yards, 1/8 mile, or 201.168 meters
Fortnight - 2 weeks or 14 days. Funny enough the wikipedia entry says that the Vax VMS operating system actually had some parameter specified in microfortnights (one millionth of a fortnight, or approximately 1.2096 seconds).