Quote Originally Posted by Dirk View Post
and the other big one is there is nothing stopping the Yanks switching off the satellites.
I was going to say the same thing, but I understand that the European Galileo constellation is compatible with GPS and most modern nav systems should switch seamlessly to whichever system is available. Unlike GPS, Galileo is not a military system. But coverage in urban areas, and in tunnels etc. is always a problem. Some smartphones even use inertial navigation (INS) when their GPS is out of range (indoors).

I would still fit an analogue speedo, as Dirk suggests. You never know when the boys in blue might stop for a chat (it's happened to me).

Lauren