Useless? I still use those 2010 maps. Common sense of course still has to apply; but even with 3-4 year old map data a rough guidance to target is possible. (Try to get from an airport to your destination at 4am using an arabic-(almost-)only OSM-based map, with straight-line "routing". That's something completely different!) It's not that there's an important bridge connection missing while you try to get out of Northeastern Miami during midnight... and that happened with Garmin. Just for the record.