Cars equipped with cameras facing outward is nothing new and is used for all kinds of safety and object-detection purposes. Cars with built-in cameras facing inside to record people are, however, almost unheard of. As one that often calls dibs of certain features, Tesla's Model 3 is indeed one such rare breed. But before you panic about your privacy, CEO Elon Musk officially confirmed it is not for that. It doesn't limit the company, however, from going beyond that initial purpose.