Well, actually if you ever had a Garmin you would understand that it makes no sense. This unit is probally your first navi unit so of course it going to make sense, but for people who have had better technology it doesnt. That explaination you gave was just an excuse for why it does that not the actual reason. Explain why I, arrive at my destination a burger joint leave the drive thru and drive in the opposite direction and it doesnt recalculate the route or anything i just see a bold green line of my last route, and the only way for it to say something is for me to go back in that general