From eight-trackplayers to Bluetooth, 10 watts to 1,000 or more, tinny tweeters to Kevlar-wound speakers, and ACDelco to Bowers & Wilkins, automakers' audio offerings have evolved impressively ...

Witness the explosion of premium, in-car audio. Not so long ago, the number of speakers in a car and the brand on the head unit were hardly differentiating factors in the top luxury cars and trucks.

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Want to option your next car with that fancy, branded premium audio system? Here's how to get peace of mind from your splurging. A Porsche 911 S brought Manuel Carrillo III home from the hospital ...