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Isn't it mainly tire- and wind-noise that dominates a car's sound emission? (unless it's a sports car where the engine noise is a 'design feature')

At high speed, yes (somewhere above 30km/h to 50km/h IIRC). At low speed, for ICE cars, it's definitely the engine noise that dominates.

Nah clearly not, I'm on the 7th floor of my building right now I can hear engines every few seconds, I can't hear tires/wind. Windows are closed