Not really Cadiz related but it was brought to my attention whilst reading a forum that the TomTom Caravan & Camper sat.nav produces routes that go via Sutton Bank where caravans are seriously discouraged from going.
If you want to try it for yourself if you have such a unit as we have then ask it to plot a route from Thirsk to Pickering whilst in " caravan" mode and see where it takes you.
Anyway I have contacted TomTom via their Map Share Reporter site and asked them to stop it.
I will post again with the result of my plea when it arrives.
( Just had a thought,Sutton Bank is in North Yorkshire.
Rather xenophobically you always seem to think that everyone knows where these places are).