Before I ask, I read my owner's manual and searched Google and Youtube without finding an answer. In the red box in the picture below from my BMW 535d, this is one of the values that comes up when I repeatedly press and release the button on the end of my left turn signal. All of the other values are clearly related to MPG info. I'm not sure what this is supposed to tell me, since it is in MPH, and 29.6 is not at a speed I ever cruise at. Any BMW guys here know what this means?