The RC Screw Driven Amphibian
This is the remote controlled vehicle that zips over grass, snow, sand, and water with the spiralling action of two motorized screws. Moving in a similar fashion to a snake’s undulation, the screws work in tandem to provide conventional forward/backward movement over surfaces that provide optimal traction on lawns, freshly fallen snow, beaches, and calm water. But at the command of a skilled remote operator from up to 300′ away, the craft can side-shift left/right laterally and execute wide forward or backward left/right circles, enabling it to sidestep obstacles. Price $129.95
