Businessman Alan Gibbs says he is about to release more amphibious vehicles including power sport vehicles that are smaller than a car.
Mr Gibbs, who is based in London, says he has developed seven different vehicles since the Aquada, including a 9 metre-long amphibious truck and a military-style four-wheel drive called the Humdinger.
In the next two months, and six years after seeking a manufacturer, he will be releasing the Quadski - a quad bike crossed with a jetski - which will be made in Detroit.
And Mr Gibbs says he plans to release four smaller vehicles under license.
