Sparrows watching a construction site, gulls flying over a harbor, giraffes taking a plane, mice boarding a train, dogs on mopeds... From Mars, dumbfounded Martians observe the strange ballet of comings and goings: airports, train stations, highways, construction sites, ports! Thierry Laval explores and reveals countless details about the world of transportation. Featuring a brand-new two-page spread that takes readers into space!