Just got in the 550 and trying to understand routing, yup! so easy?
Anyway, Create Route via preloaded Base map and it steps me through the points. So far do good but then when I see the route it is a straight line so "worthless." Do I need to add a different map set to get actual route (street to street to ...) or what?
Also, another issue when try to route, get an error "Route calculation error: Maps do not have routable roads in this area"