When starting navigation via auto-suggestion the driver in fact does not know where to until arrival :) which is sometimes fun, sometimes not. This is not related only to home/work , but also to calendar entries, when skipping one event for the next one calendar based destination takes me to the first place. I would rather be offered a bunch of 3 most probably destinations to choose from rather than stopping the naviagation just to know where to. The destination address shoud be clearly stated on the routes and routes detal views.