ACV aerodynamic aerodynamics air air-cushion air-cushion-vehicle air-pressure amphibious craft cushion drive engines fans flexible flexible-skirt flight friction high-air-pressure hovercraft hull hybrid-vessel impeller inflated inflated-skirt low-frictional-force MTV multi-terrain-vehicle multiple-terrain on-board pilot propel propellers rise sightseeing skirt skirted specialised-transport speed stationary surface surfaces thrust tourism tourists transport transporting travel travelling vehicle dance dancing spring top vital vivid woman young health lips summer tall bush discover discovery girls hedge path skirts tree walk women bag buy fashion girl purse shopping tights wear boots female illustration mini people pose