Mercedes-Benz Special Trucks has tested a Unimog implement carrier prototype with a hydrogen combustion engine in real operation. The Unimog is a test vehicle that is used to research the conditions under which hydrogen combustion can be implemented as a supplement to battery-electric and fuel-cell-based drives. On a decommissioned section of the highway between Bayreuth and Bamberg, engineers collected measurement data when mowing the verge, accelerating and refueling at a public gas station. The data will be used for further vehicle development. Employees from Autobahn GmbH accompanied the tests.