Lexus showed a concept car with the driver's heartbeat displayed on the body
mashable.com A wireless heart rate sensor is attached to the body of the driver of the Lexus RC F, which sends a signal to the control panel in the rear of the car, and it controls the luminous LED inserts on its body. During acceleration, people around can see how the driver's heart begins to beat faster. The benefit of this, however, is only decorative.