Sizes options / Ambulance
Ambulabces are quite huge on some points.
Sometimes ambulances are 17 feet long, 7 feet width and 10 feet high.
We can't use small roads, and some tunels. Also, we run fast, really fast. So we add some false data in the system. In the same times, avoiding tickets is important because of papers (During a speed limit automatc control, we need to provide a lot of documentation).
Also, since we're running fast, the screen doesn't follow very very well the map.
Here in Europe we have a lot of little streets.
And I think that if a user can add his car's dimensions it would help a lot, and will avoid buying really expensive specific GPS.