Real-world zero-emission motoring set a record recently when a Hyundai ix35 Fuel Cell was driven 2,383 kilometers in 24 hours. Scientists Arnt-Gøran Hartvig and Marius Bornstein traveled around the clock on public roads in Germany, emitting nothing but water vapor from the fuel cell electric vehicle.

To achieve this distance, the two Norwegians covered the more than 300-kilometer route between Vatenfall’s hydrogen station in HafenCity, Hamburg, and a Shell hydrogen station in Sachsendamm, Berlin, as many times as possible in 24 hours. Refueling the car takes as little as three minutes, enabling the drivers to maximize the distance covered, according to Hyundai.

Hartvig and Bornstein’s trip was captured on GoPro cameras. Their route included city driving as well as high-speed roads, demonstrating the Hyundai ix35 Fuel Cell’s performance, according to Hyundai.

The ix35 Fuel Cell is fitted with a 100-kilowatt (136 ps) electric motor, allowing it to reach a maximum speed of 160 km/h. It produces no harmful emissions – only water vapor comes from the tailpipe – and has an official driving range of almost 600 kilometers on one tank of hydrogen, according to the automaker.

In June 2014, the duo drove the ix35 Fuel Cell a record 700 kilometers on one tank of hydrogen. They have also driven from Oslo to Monaco, refueling only at the hydrogen stations already installed along the 2,260-kilometer route.

Hyundai Motor ix35 Fuel Cell is on sale and on the roads in 11 European countries, according to the automaker.