1. High speed and low pressure, whose speed is this? And the paradox caused by the frame of reference. Answer: The key to understand this is the steady-state condition of Bernoulli equation. When the earth is taken as the frame of reference (even if the car is abstracted into a sphere or ellipsoid without considering the specific details of the flow field), the flow field of the car is no longer stable. Secondly, in the flow field analysis, the relationship between pressure and velocity is more related than causal.

That is to say, on the premise of Bernoulli, the high velocity of the flow field will be accompanied by the phenomenon of low pressure, not that high velocity will lead to low pressure. If so, I would like to ask you why the speed of these places is high. Why not answer it again, because the air pressure is low here?

2. Why do people always feel the wind blowing in when sitting in the car? A: Because when the wind blows outside, people can't feel it, because the wind doesn't hit their faces. This doesn't seem to be in line with life experience, because in fact, sitting in front of the window will feel the wind hitting your face. This is because the real flow is unstable. The process behind the window post is similar to Carmen Vortex Street (you can search for a video yourself, which is quite interesting). In fact, there is a vortex that keeps swinging. After the filter of "no face, no feeling", only the signal of the wind blowing in is left. In a sense, it can be considered as the real flow field after time averaging.