Comment by acatton

One of these features is "Active Hood" or "Pop Up Hood" which uses pyrotechnic to pop the hood of the car in case of a frontal collision with a pedestrian, thus making the front hood of the car acting as some kind of stiff airbag for the pedestrian. This helps reducing the risk of life-threatening injuries. https://www.youtube.com/watch?v=q4zfwUL3joI

NotJustBikes on youtube has a video listing more of these features which don't exist in cars sold in the US: https://www.youtube.com/watch?v=--832LV9a3I