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 expensive luxury pavement shop showcase store street walls window cars dawn Morning ontario road sky sun sunrise winter carriage coach coach-horses coachman horses elements household object isolated items things tower towers abstract background beige brown chips copyspace flints gravel norfolk pattern small stones sunshine texture