I went back to original post and found this comment:
It appears to be a Hanomag-Henschel F35 truck, customized by 'MAFI /Trepel Transport Systems'. The reversed, forward-facing cab allowed the truck to be parked close to the waste port without needing to reverse, which would have required a second person, and could have resulted in an (expensive) collision with the aircraft.
And this:
They were horrible to drive. The cab was just turned around on the chassis, so effectively you were reversing but you were looking forward. The gearbox was changed to make it possible to drive through the gears in the usual way, with the rear end in front of you; but the self centering of the steering was not changed, making that you had to fight the steering constantly. There was no power steering in those Hanomag Henschels which made them dangerous to drive. Stupid concept, they were generally hated by us. We had one for toilet service and one for water service at Rotterdam, secondhand from Frankfurt.