The shortest way from our new house to school is right through Rocinha, the largest (in population) favela in Rio de Janeiro. (For context, the population of Rocinha is estimated to be between 100,000 and 300,000. Our hometown of Moncks Corner has a population of less than 10,000.)
However, we're not allowed to drive through favelas, so I have to take a nearly mile-long tunnel under the favela and through the mountain and then drive back up around the other side of the mountain. If traffic is moving, time in the tunnel is relatively minimal. But if traffic is slow or not moving (more often than not), it can take minutes to get through the tunnel.
In a mile-long tunnel that runs through a mountain, you lose all radio reception no matter how fast you drive through it. My newest hobby is to try to keep singing whatever song is on the radio after I lose radio reception to see if I'm on the same part of the song as the radio when reception picks back up on the other side of the tunnel.
I lose the game every single time. Every single time. I'm very disappointed in myself and hope that practice makes perfect in the future.