@lavaman wrote: " Then the Japanese introduced their cars without those vents, but with air conditioning"
I must disagree. Side vents were disappearing on American cars back in the late '60’s, when Japanese cars were just a curiosity and came with no AC AFAIK.
In my Matrix I get buffeting if I only open the rear window’s pretty wide, but it stops if I crack a front window just a little; it disrupts the “tuning”.