Every day I take the same two-lane tunnel. This tunnel dips and then rises to street level. Not only do idiots drive side by side doing 5 under making it impossible to overtake them, they also fail to maintain speed on the incline so when you are leaving the tunnel, the 2 idiots are now going 10 under.

https://www.google.com.br/maps/@-23.5806467,-46.6838761,3a,75y,207.59h,81.7t/data=!3m6!1e1!3m4!1syo5rtdQAdDZ3h3p9_TXTHA!2e0!7i13312!8i6656

I often ride their asses in the middle of the two lanes to see if they move, I also use the horn a lot.