Bluetooth stops abruptly near to vytilla overbridge

Here's a mystery for the fellow redditors. Me and my gf while travelling back from vytilla, have noticed that the bluetooth always stops abruptly at a certain point, every single time. This happens on the right lane of the road. I will attach the video, although my girlfriend missed to show the exact point where the bluetooth cuts off in the video. But you can hear the music getting cut off. And this happens the same way every single time. What do you guys think this is?!!