Poles' sloping roads where cars slide down one after another with brakes disappearing due to snow

The road where snow is piled makes it difficult to control the car, even people in familiar snowy country are dangerous, but a movie is shot of a slope that will slide down even if you are braking in Poland.

Details are as below.
Taxi to climb the slope slowly.
LiveLeak.com - Slippery Snow


At that time, the red car on the slope slipped down.



Red car stopped briefly hit the taxi that was under the hill.


After that, a taxi that should have climbed the slope also slipped down.


Again stopped hitting a taxi under the hill.


It seems that the people who were on board were safe because it was not much speed.