Sports cars may not have the best reputation for being environmentally-friendly, but this sleek machine has been designed to reach 217.5 mph (350 km/h) – using nothing but saltwater.

Its radical drive system allows the 5,070lbs (2,300kg) Quant e-Sportlimousine to reach 0-60 mph (100 km/h) in 2.8 seconds, making it as fast as the McLaren P1.

After making its debut at the 2014 Geneva Motor Show in March, the saltwater technology has now been certified for use on European roads.

The 920 horsepower (680 kW) Quant e-Sportlimousine uses something known as an electrolyte flow cell power system to power four electric motors within the car.

It works in a similar way to a hydrogen fuel cell, however, the liquid used for storing energy is saltwater.

The liquid passes through a membrane in between the two tanks, creating an electric charge. This electricity is then stored and distributed by super capacitors.