Any fans of Gibbs amphibious vehicles may remember the Aquada from back in 2003 that Mr Branson broke the car/boat record across the channel from UK to France.
AQUADA]

In 2005 they started working on an ATV type machine that at the time seemed rather too "concept" for most tastes.

For 2013 thay seem to have ironed out the bumps and this video shows what anyone with a rather eye-watering spare 40k to spend could enjoy this summer

Quadski anyone?
VIDEO HERE

Here's what the blurb says:
The Quadski reaches speeds of 45 mph on both land and water and transitions between them in seconds. At the press of a button, the Quadski’s wheels retract after entering the water and deploy when approaching land.
The single most advanced piece of GIBBS engineering is the suspension. It gives superb ride and handling on land and retracts when on the water. The complete transition takes four seconds, at the push of a button.
Power;
1300-cc BMW inline four; 175 hp. Power split to a limited slip rear differential (land) and a high-performance jet pump with reverse (water).

Perhaps they are looking for dealers and they might lend us one?
Boatshed Blue would make listing boats and viewings much easier Mr Gibbs?

Image credit Gibbs Sports.... Cheers :)