Better auto-zoom

🚧 THIS IS A TICKET MIGRATED FROM UPVOTY. The original ticket and comments will be available for a limited time over at:
https://abrp.upvoty.com/b/request-a-feature/better-auto-zoom/
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Most route planners automatically zoom in while driving slower (in cities) and zoom out again when driving faster, outside cities. This is perfect: in cities you need the details of all intersections, outside cities, you want to have a birds eye view and see where the route is going.

In my experience, ABRP does a poor job zooming out. When using the iPhone app, driving outside a city, I mostly saw a straight line going up.

I think ABRP should zoom out more while driving outside a city.