It would be nice to see the current time displayed on the device while viewing the map. The ETA clock on the bottom right is a great tool, but it is meaningless without being able to look at the current time too. Yes, I wear a watch, but driving a bus full of Scouts in the dark makes it a bit of a hassle to look at it.
Just a thought, but there is room if you shift the info in the top bar to the left and display the current time in area all the way to the right.