it's a nice interactive full sized map in a car - but probably this still not main navigation, as the projected on screen is the best one imho.
'98 Avus Blue 320i - SOLD '06
'06 TiAg 320d - SOLD '10
'07 Montego Blue 325i - SOLD '12
'07 Z4 Coupe 3.0si - SOLD '16