This is actually part of why cars used to have separate vent windows in the front side windows to alleviate the pressure that occurs. The phenominon is a lot like the glug, glug from trying to pour a soda too fast. Air has to have a path both in and out.
The "pour the soda slower" compromise is in how much window you have open, which will vary with speed and crosswinds.
The "pour the soda slower" compromise is in how much window you have open, which will vary with speed and crosswinds.
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