On-Star: Knows where you've been.

[Moonliner]

Originally Posted by JWBear

Which makes sense. Why would the company track and record your car's every move? That's a lot of data to store, and storing massive amounts of data costs money. How would they profit?

I think your idea of "massive" is a bit outdated.

A set of GPS coordinates can easily be stored in a single long-integer.

That means a single $400 Terabyte drive could hold something like 137,438,953,472 position records. Let's say I'd like to track a car for every person living in Los Angeles (~9,949,081). With just the hard drive atached to my own personal PC I could track 13,814 descreet locations per car.