if you need help to made the road map file in KML or GPX let me know i have the knowhow for do it finger in nose (i know is not polite)
Chester, this seems to say that you know how to plan a journey into a satnav, rather than use their rather primitive features. What can you advise, please? Where do I put my finger?
rgds
Stuart
that depend on where you want to start, if you want to plan all the road with your satnav, the best is to list out the road name , input it in a mapping software and from there extract a KML or GPX file all Satnav (include mobile app's) can read it easily.
if you need more details let me know exactly so i can see how to help you