This is work-in-progress

I now have a first patch for time-to-destination, it is here: http://paste.debian.net/download/179219

It is showing the time-to-destination (only in guidance mode), but the value is not updating unless the route gets recalculated, so it is rather useless right now.

What I did was overloading the distance field in the dashboard and additionally displaying the time-to-target as well. I enlarged the size of that widget in portrait mode a bit (landscape should be fine) and hope the speed widget does not get cropped if e.g. a speed limit is displayed and one drives in the three-digit range.