Anand Mahindra, a billionaire, has a message for Nitin Gadkari specifically in his most recent tweet. Anand Mahindra’s Twitter stream is very interesting.What great concept, says the post. I have no doubt that @nitin_gadkari ji can make our highways “sing.” The only difficult decision left is WHICH song or piece of music to play when the tempo is appropriate. It would probably need to vary from state to state!” This is from Hungary, where engineers have built a musical road, according to the source. If the driver drives on some marks on the side of the road at a controlled pace, it makes noise. It was even audible in the video.