nah Dr it is more the case that a map is always on, never runs out of batteries and is not affected by cloud above you and most importantly, the yanks cannot turn it off or move it.
last point is where my main distrust of it comes in. unfortunately it was not set up as a civilian device, although they are making more moves to become a civilian service with the new sats, at the end of the day the US military still controls it.
im going to wait and see how the Galileo system turns out before getting anything fancy to rely on.
did i mention im not a fan of fancy do it all gadgets?
