Shell Eco-Marathon.

Impressive 1,091.6 kilometres drove the ‘Fennek’ vehicle of the TU Graz using only one kilowatt-hour of energy at this year’s Shell Eco-Marathon before it gained the victory in the battery-electric prototype category. In comparison, the most economical fuel cell prototype managed 428.5 km on one kWh.
energyblog.nationalgeographic.com (Fennek), shell.com (all results)