Following the successful trials of his Dynasphere a huge wheel with a seat inside. The model of which is shown in the photo below. The enlarged version of the model seats five persons comfortably in a glassed-in cabin, which remains in an upright position while the outside wheel rolls down the road. The motive power of the vehicle is supplied by a small engine in front of the driver, which runs on a geared track on the inside circumference of the wheel.