At least the Tom Tom seems to know where I am at journeys end, but on the way it seems to get its knickers in a twist.
When the recorded route is put into Tyre it shows some strange inaccuracies that seem to log that I have ridden in circles for part of the journey. In some cases it shows the arrival point in North London completely wrong and a point 25 miles away.
It might seem a minor problem, but in the SOC we exchange routes so that when we are on runs out, we have the same route. If someone has done the route before, sharing the actual route taken is better than a planned route that no one has ridden before!