Re: Actually most satnavs are still remarkably unreliable
Garmin is humorously wrong in northern Spain.
Our Garmin device in the car is regularly fed OpenStreetMap updates which are only occasionally incorrect, and then rarely beyond the next update. That said, it still wants me to get off a particular main artery, then straight across the crossroads at the bottom of the slipway and back on the main road again, as it has done for at least the past five years. Probably more of a routing calculation quirk than a mapping error, I expect.
From the 60Csx I expect nothing more than remembering a couple of waypoints, and showing a direction pointer to the one selected.