Japan will soon have
musical roads; the Hokkaido Industrial Research Institute has developed a way of encoding melodies in patterns of grooves on road surfaces so that, when a car drives over them, the vibrations reproduce the encoded melody. They are planning to encode different, locally appropriate, melodies on specific sections of roads.
Also on Dottocomu, special Valentine's-day RAM modules.
I thought of this years ago in regards to the "rumple strips" along the edge of the highway to Melbourne that "buzz" if you start to run off the road. I was thinking they could modulate the strips like an LP, and have a voice that says "Wake up! Wake up!" when you drive onto them.