Airport Amsterdam Schiphol starts using 100 electric buses

Google translate: https://translate.google.nl/translate?sl=auto&tl=en&js=y&pre...

Accus in the roof? Seems a weird choice. You would want to keep the center of gravity low. Is that to keep the fast-charging current away from the passengers, or would the floor be too high if they put them in the bottom of the bus?