Your Car Knows When You Gain Weight

Your Car Knows When You Gain Weight

Cars produced today are essentially smartphones with wheels. They not only know how much we weigh but also track how much weight we gain. They know how fast we drive, where we live, how many children we have — even financial information. Connect a phone to a car, and it knows who we call and who we text.

But who owns and, ultimately, controls that data? And what are carmakers doing with it?