Yes, I have a Speedhut GPS speedo on my V50 II. I love almost everything about it: Lightweight, very simple to install, needs only a spot to coil and stow the lengthy antenna cord, easily legible in daylight or dark, ultra accurate with both speed and distance, needs no wheel sensors or cables. The only foible of this unit is that, when travelling through a stretch of road where there are trees overhanging both sides of the road - thus eclipsing the GPS satellite signal - the speedo will momentarily lose its speed readout and drop to 20MPH. As soon as the signal is restored, it immediately snaps back to an accurate readout. This can also happen in tunnels, underground garages and other places where the GPS signal is blocked. To me, this is a very minor and insignificant shortcoming. The fact that this instrument gets its readout signal from a GPS satellite, rather than a mechanical or electro/mechanical sensor/cable driven by a wheel, is a step forward. The brief occasions when the GPS signal is blocked are unimportant compared to its stellar overall performance.