Garmin Tread and Zumo XT and Overlander are great nawigations systems for on road and off road tracks.
With world digitalization even rallys like Dakar will switch to digital roadbook in the near future.
I wonder if garmin developers are thinking about and feature for above devices to read digital roadbook which is nothing else than long PDF.
Interface with pdf and two customizable metrometers will be a step ahead for amatour rally riders like myself.