Read this and I think it will make more sense: http://www.theatlantic.com/technology/archive/2012/09/how-go...* http://www.theatlantic.com/technology/archive/20

Read this and I think it will make more sense: http://www.theatlantic.com/technology/archive/2012/09/how-go...* http://www.theatlantic.com/technology/archive/2012/09/how-go... That article doesn't address my concerns at all - namely roadway changes caused by factors like construction, storm washouts, etc - that haven't been integrated into the geographical/geospatial data.