The blue overlay shows where Street View imagery is available. You can zoom in to an area to see more detail.
This information shows a sample of the areas in which our cars are currently operating. We try to make sure the information is accurate and kept up to date, but because of factors outside our control (weather, road closures, etc), it is always possible that our cars may not be operating, or be operating in areas that are not listed. In these circumstances, we'll try to update the list as soon as we can. Please also be aware that where the list specifies a particular city, this may include smaller cities and towns that are within driving distance.