What you're looking at is former F1 driver Robert Kubica testing out the damper setup on his Ford Fiesta WRC car before the upcoming Monte Carlo Rally. I have watched this a hundred times and I still can't get over the speed.
Maybe it's not the speed — maybe it's the commitment. Kubica is flat out over this undulating mountain road.
Here's the first view of him on this stretch.
And here's the second.
Check out Axis of Oversteer for a longer rumination on what you're seeing going on here on a technical level.
This is why top-spec rally cars spend five figures per corner on dampers alone.