> Mopeds are becoming increasingly rare. How will we demonstrate the Doppler effect to kids now?! I haven't lived in NL for about ten years, but I still have

> Mopeds are becoming increasingly rare. How will we demonstrate the Doppler effect to kids now?! I haven't lived in NL for about ten years, but I still have PTST from these 100dB mopeds at 4am. Whatever else can be said about e-bikes: mopeds will not be missed.