Modern automobiles are technological marvels offering many options for car buyers. Privacy is not one of them. New cars have become spies on wheels.

Automobiles today are giant rolling sensors, from the tires to the entertainment system, tracking not only your driving habits but recording personal information about you, completely unrelated to driving.

Experts call them a "privacy nightmare."

New cars can collect more data about you than anything else you own, including your cell phone, and for good reason. Driver data has been valued at $400 billion.

"The saying in Silicon Valley is, 'If you're not paying for the product, you're the product.' But what's strange with cars is that the average new car costs almost $50,000. You're still the product," says Andrea Amico, founder and CEO o

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