Actually, if you sheet the misload and send it in, the center can send the misload back to your board under the route that it was supposed to be on and you can use the map that way.
You can also use the map without it being in the cradle inside the truck. You can zoom out of the map, get a turn by turn look similar to what mapquest used to let you print out. While it's in the cradle, it charges and doesn't kill your battery. It does beep at you when you're about 200 feet away from your stop (though very lightly) then does a louder beep when you're at your stop.
Most people hate the map navigation, but on Saturdays I use the hell out of it. I don't know where a lot of the stops are so I just follow Orion 100% until I get to an area I know and then just work normally. It makes the job pretty brainless as long as you keep your eye on the road more than the diad.