Videos where rocketed cars violently scatter sparks and ski jump

Mini · Cooper challenges the ski jump which is the competition of the Winter Olympics. It is worn by a sled, attached to a rocket, and lifted with a crane. It is quite powerful to slide fiercely while scattering the sparks.

Details are as follows.
YouTube - Pleuris

It seems like a rocket launch as if the ignition was around. It is not flying than it looks.

The following movies are from the preparation stage. I can tell you why the start line was bent in the middle, the reason for this is seen. The way adults tackle seriously stupid things is really interesting.
YouTube - TOP GEAR MINI SKI JUMP