HOW CAN WE MAKE CARS MORE ENERGY EFFICIENT?

If you ask The Delft University of Technology student engineers behind the Ecorunner V, they’d say that reducing drag is a big part of the answer. Theirs is the most aerodynamic car ever, with a record-breaking drag coefficient of 0.0512. 
By comparison, most production cars are about six times less aerodynamic. The Ford Focus ST has a drag coefficient of 0.3, while the Volkswagen Golf comes in at 0.27.

The Ecorunner V’s body weighs just 9kg, or 38kg including the hydrogen fuel cell. It can achieve an efficiency of 1227.5km per cubic metre of fuel, which is the equivalent of over 3,000km per litre of petrol.