Strange vehicles

I have found many strange vehicles from this folowwing website: http://www.diseno-art.com/encyclopedia/strange_vehicles/strange_vehicles.html
planetagadget.com

The first vehicle I am going to introduce is the WaterCar Python. This car is capable of travelling at very high speeds on both land and water. Having a Dominator Jet Drive propulsion unit, it can move up to a speed of 60 mph on water. This car is actually on sale but is only built when it is ordered with different interior and exterior designs.
luxurylaunches.com

Looks like a snowmobile? Similar, but no. This Platune sand-X bike is made from a snowmobile but with modifications so that it can be used on sand dunes instead on snow. Modifications include skis which have been replaced with wheels and a radiator which sits out at the front of the vehicle.

segway.com

The segway P.U.M.A is a prototype revealed in April 2009. The P.U.M.A takes up less space, uses less energy and is produced more efficiently by using less parts. Its aim is to allow people to travel more quickly, safely, quietly and cleanly - and at a lower cost.