US Patent 7445225 Sail-propelled vehicle

A land sail-propelled vehicle includes a one-piece molded body defining a seat in a top surface thereof. At least one tubular rear axle guide is bonded to, or molded into, a rear portion of the body. A rear axle assembly, including at least one rear axle, is removably insertable into the at least one rear axle guide. A tubular port is bonded to, or molded into, a front portion of the body. A steering assembly is removably insertable into the port. Tires, ice blades, or the like are attachable to the ends of the rear axle assembly and steering assembly so as to engage an underlying solid surface. A sail assembly is detachably connected to the steering assembly to propel the vehicle.