@rinigus

I tested your voice version now on a long track and it generally works very good, I only noticed a small mistake (of which I don't know which component is responsible for it; I was using it together with your OSM server): i says (in German) something like 'turn right after X meters' where 'meters' is not translated as 'Meter' or 'Metern' if X > 1 but 'Meters'.
Would it also be possible to let the announcements come a bit earlier?

@otsaloma
Would it be possible to implement some kind of 'auto zoom' depending on the current velocity and/or the closeness to necessary maneuvers?
For example if I'm on the highway, I would prefer a more zoomed out view, while e.g. in the city more details regarding the roads would be helpful.