A few minutes ago, when we sat down for breakfast, I noticed my wife had her Garmin NUVI out of her car, on the dining room table. She entered the daughters address in Boulder and said "I wonder how its going to route me". Well says I, you'll have to wait to find out till you get outside. It wont work in the center of a 2 story house, because of canopies, Mghz, Atomic seconds and waves and stuff...I know cuz thats what the xperts said! She pushed GO and it instantly showed her that she had to go out the driveway, down the road 1.2 miles and turn right...It also showed a full signal strength........