Aerodynamics M3 and M4
 

https://www.youtube.com/watch?v=PGWATnVMPP0&t=306s

https://www.bmw-m.com/en/topics/maga...odynamics.html

That's an interesting segment with the sliced CFD graphics.

the driver looks super-serious.

smoke flow
 

It would have been a benefit had they turned off all the tunnel lights, except a narrow centerline from above, providing contrast to the white smoke.
Also, had they 'buried' he smoke wand in the boundary layer, we would have had an opportunity to actually 'see' attached flow in the most important areas of the car.
Shame.
Thanks!

It is a marketing presentation ...

I'd rather see things like this as advertisements than dumb animated dancing cars with no spoken words. Hamsters are more important to consumers than knowing anything about the vehicle though, so that's what we get.

They spoke of downforce a lot, which would turn me off from purchasing such a vehicle. I don't want to spend a portion of my fuel creating downforce because a car is already heavy enough to stick to the road. If I wanted to race a car, I'd buy a race car and drive it on the track.