Answer: Float Plane Mover. This truck's job is to move planes up and down a boat ramp into the water. Backing up an ordinary truck+trailer combo down a boat ramp is not easy. With this vehicle, the driver can look straight forward down the ramp rather than in his rear-view mirror, and since the steering wheels are at the back it's easy to align the truck's bed with the plane. Most trucks only load at a boat ramp once in a while, since this one does only that, it makes sense to design it specifically for that job.