I just looked it up in the manual to word my response to you guys and found this, it's called Automatic scaling. It's being mentioned under Voice Commands.
Here is how it worked for me:
Pick a destination and start guidance to it.
Now back on the map.
On the main or split screen, select either the Map facing north and Map facing direction of travel view.
Zoom-in past 100 ft. The next incremental turn to the left past 100 ft. brings up an "A" or "Auto" (can't recall) in lieu of 100 ft for Automatic scaling. So it does show on the screen you are on Auto scaling.
The map then scales to fit/ show the entire itinerary from your current position.
The Auto scale doesn't work with the Perspective view, too processor-intensive I am guessing since the system already lags 2-3-4 seconds when zooming in or out manually. Anyone knows what CPU does the F10 have?
Do I have a different (system no maps) software version from yours? I doubt options make a difference.
How about***********: with Map on the main screen hit Options > Settings. I have all the options ticked except for the bottom one : Gray Map/ Traffic conditions.