Music Highway works simply. Divide the tracks left by the car on the ground into several segments according to certain standards, and set small deceleration ridges or ground markings on the ground. When a car drives over, a rumble occurs in the space between the car's chassis and the road. According to the distance of the driving track, when the car drives by, it can produce music and melodies with different levels and patterns, so that a piece of music can be played. However, people must control the driving speed to 45 kilometers to enjoy the wonderful music. If it is too fast or too slow, it will produce the effect of fast or slow playback.