The central component of the Free Drive system is the Schaeffler generator, which sets the constant resistance on the pedal while simultaneously absorbing the rider's pedaling power
So I think with this bike when you take off from a stop, you just squeeze the throttle or whatever controller it has and take off using battery power.
On the other hand, you can pedal at your most efficient cadence/force all day long without regard to terrain.
As they are German, I think that's not the case (if they want to be classified as an eBike). To be classified as an eBike it needs to work in "pedal assistance" mode. That is, you can't have a throttle/button/whatever, the engine only starts if you are pedaling.
the low overhead of bikes (registration etc.) isn't necessarily a problem for a company's motor pool. iirc it might very well be possible to ride those on bike paths - even if they need a moped registration plate - as long as the maximum power and speed is limited.
in austria, small electric numberplate-less mopeds (scooters) with a 25km/h speed limit and no pedal assist are legal, no idea about germany tho.