The wagon was powered by electricity, generated by a 12-horsepower gasoline engine which accompanied the large vehicle. "At night a blaze of between three and four hundred incandescent lamps will give a beautiful illumination bringing into relief the splendid exhibit of bright grains and grasses tastefully arranged on a royal blue background", said the wagon's promoters. But the expensive American wagon proved too heavy and too large for most British roads, and unable to climb a gradient beyond 1 in 25. The next advertising wagon was built in England.