This means that when the vehicles come across a particularly steep or slippery slope, they can anchor themselves with five of the wheels and inch each wheel forward one at a time, to crawl over an obstacle.
Night has turned to day and the swift journey through a sparkling city of a few hours ago has been replaced by a grim crawl through traffic clogged streets, time again to reflect on what it must be like in the eye of the storm across the Atlantic.