A method performed by a vehicle route assessing system for assessing one or more navigation routes of a vehicle in consideration of cellular and/or non-cellular communication of an Internet connection system of said vehicle , said method comprising: determining with support from a navigation system of said vehicle , one or more potential vehicle navigation routes from a start position to a target position ; determining respective predicted bandwidth capacity available to said Internet connection system along one or more route sections of the one or more potential routes , said respective predicted bandwidth capacity being based on statistical bandwidth data derived from previous data gathered by a remote vehicles management system supporting communication with one or more vehicles , said previous data indicating previous bandwidth capacities experienced by Internet connection systems of vehicles having previously been positioned along, or in vicinity of, said one or more route sections ; suggesting out of said one or more potential routes , at least a first route determined to be favourable in view of predicted bandwidth capacity available to said Internet connection system ; visualizing with support from a digital map of a display of said navigation system , a mapped route reflecting said first route , wherein along said mapped route , the predicted bandwidth capacity available to said Internet connection system for the one or more route sections along said first route , is visualized; the method being characterised in that it further comprises the step of: visualizing a warning indication upon said vehicle approaching a route section of said first route having a predicted bandwidth capacity below a predetermined level threshold, wherein said warning indication is visualized in association with a segment of said mapped route reflecting said route section . determining with support from a navigation system of said vehicle , one or more potential vehicle navigation routes from a start position to a target position ; determining respective predicted bandwidth capacity available to said Internet connection system along one or more route sections of the one or more potential routes , said respective predicted bandwidth capacity being based on statistical bandwidth data derived from previous data gathered by a remote vehicles management system supporting communication with one or more vehicles , said previous data indicating previous bandwidth capacities experienced by Internet connection systems of vehicles having previously been positioned along, or in vicinity of, said one or more route sections ; suggesting out of said one or more potential routes , at least a first route determined to be favourable in view of predicted bandwidth capacity available to said Internet connection system ; visualizing with support from a digital map of a display of said navigation system , a mapped route reflecting said first route , wherein along said mapped route , the predicted bandwidth capacity available to said Internet connection system for the one or more route sections along said first route , is visualized; the method being characterised in that it further comprises the step of: visualizing a warning indication upon said vehicle approaching a route section of said first route having a predicted bandwidth capacity below a predetermined level threshold, wherein said warning indication is visualized in association with a segment of said mapped route reflecting said route section . <EOS>