We had no reason to offer any further proof that Japan is the unquestionable winner when it comes to wacky inventions, but the Melody Road convinces us our judgment is completely accurate. The Melody Road will allow a car passing above it to play a simple tune, which is made audible by ridges on the road's surface. The pitch of the note created is increased by increasing the frequency of the ridges, and the opposite is also true. Jump for more details, and a completely baffling video.
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