Is your exhaust sound real or digital?

AC Cobra Creative Commons/Flickr/Alexander Nie

Every driver knows that the sound of a car is an irreplaceable, unique part of the ride - part of its fingerprint, perhaps. But if that's the case, then why are so many manufacturers installing synthesized exhaust sounds?

Topics in this Podcast: howstuffworks, ben bowlin, Scott C. Benjamin, engine sound, exhaust sound