It would indeed be great if the buttons were customizable. Since I use
AutoRoute in my car on an Asus R2H UMPC, it would be great if the standard buttons could:
1. Be on the left side of the screen (easy to touch)
2. Adjustable in size (to make them as small as possible, but still easy to touch)
3. Programmable for as much functions as possible. (To be able to use a number of functions that is important while driving, like zooming, toggling the GPS pane etc.)