With sound technology forever in development, systems in automobiles undergo major changes from time to time (bye bye, tape decks). Thanks to advancements from German auto-component supplier Continental, speakers might be the next to go. This is because the company has developed technology that turns the entire car into a sound system. The rear window becomes a subwoofer; the windshield, floor and seat frames deliver midrange sound; the A-pillars become tweeters. This is all according to Dominik Haefele, the leader of the team that developed this high fidelity, immersive sound technology. The system, known as Ac2ated Sound, may appear as early as 2021. You can read more about its development at the New York Times.