READ FIRST BEFORE WATCHING THE VIDEO!

This tunnel in Russia is the longest in-city tunnel of Europe.
There is a river running over it and water leaks at some points. 

When the temperature reaches minus 38 degrees like it did this particular winter, the road freezes and the result is the attached video taken during A SINGLE DAY with the tunnel camera.

Congratulations to the dual bus driver   ....

This is better than turn 4 at Daytona. Remember - this is only ONE day of video.