Abstract: A railway car is convertible from a grain carrying car to a vehicle transport car and vice-versa. The car has closed sides, a roof and a floor and end doors movable from a closed position when in the grain carrying mode and to an open position for vehicle transport mode. Loading hatches in the roof and dumping hoppers in the base allow for use in carrying grain and other comminuted material and longitudinally extending spaced and parallel vehicle grids are provided on one, two or three levels thereby permitting vehicles to be carried in a conventional manner when in the vehicle transport mode. The grids and supporting structure permit and facilitate the loading and unloading of grain or the like when in the grain carrying mode and the railway car is easily converted manually from one mode to the other.