The revelation that Volkswagen rigged software to cheat on emissions tests got us wondering: What else is the software in your car doing that you don't know about?
Well, that answer, for the time being, will remain a mystery.
That's because there's a little-known law in the U.S. that bars car owners — and researchers — from accessing the software inside vehicles.
There are as many as 100 million lines of computer code in some new cars. They help control the steering, cruise control, air bags, entertainment and anti-skid systems.