Car makers are doing something amazing when it comes to keeping their new cars top secret

In a world where virtually everyone carries around a camera in their pockets, car companies have to take great care to keep their new designs a secret.

This is especially true when it comes to real-world road trials, in which a yet-to-be-revealed vehicle leaves the closed test track and makes it out into the public eye.

"Spy shots" are a staple of the auto-enthusiast world. Photographers have made careers of hiding out around the automakers' facilities to nab a photo of a new vehicle. 

But the advent of the smartphone has brought a bunch of new, non-pro spies into the game.

So the automakers have pushed back. Ford, for example, has developed effective camouflage to hide their designs from spy photographers or cell phone cameras - and the Blue Oval just released a video explaining how it works.

Check it out: