Yahoo! News - Britain Launches New Sports Car-Boat The Aquada can hit speeds of 100 miles an hour on land — and once it hits water, the wheels retract into the wheel arch, jets kick in, and the car is suddenly a boat.James Bond, eat your heart out. Of course, the sticker price is $235,000 and it has no doors (to avoid leaks) - you have to jump in.Once waterborne it can reach speeds of 30 miles per hour, according to Gibbs Technologies, the British firm that designed it.