> 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.

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.