The Lartigue monorail is inspired by Algerian dromedaries

Charles Lartigue designed a type of rail transport by observing dromedaries carrying balanced loads in saddlebags over their humps. His system relies on a single rail placed at waist height on trestles, where the carriages straddle the structure like saddlebags. In 1881, he applied this invention by building a 90 km line in the Algerian desert to transport esparto grass using mules.