That's the way I/we machine parts everyday, technology is a great thing.
Today we machine 300M and 4340 forged steel, at 230"/min feed rate, dry, just like in the video.The average depth of cut is .080".
The only cooling used is pressured air.
It looks to me like a demonstration video, probably a promotional thing.
Does a great job, BUT i really wonder , things/machines like this put people out of work.