The world's first high-speed amphibious vehicle was launched on the River Thames today.

The car is designed to reach speeds of 100mph on land and more than 30mph on water and can switch between the two surfaces at the switch of a button.

According to its designers the Gibbs Aquada is neither a boat with wheels nor just a waterproof car. Gibbs Technologies says that no other road-legal amphibian has managed to exceed 6mph on water. From the London Times