Jared Padalecki, Jensen Ackles Jared Padalecki, Jensen Ackles

"This 1967 Chevrolet Impala would turn out to be the most important car — no, the most important object in pretty much the whole universe."

That's what Chuck Shirley said about Baby in Supernatural's fifth season. But what goes into making the world's most important Impala?

On the Set: Go behind the scenes of Supernatural

To learn more about the Metallicar, TVGuide.com visited Supernatural's Vancouver set, where we got up close and personal with Baby and learned her secrets. Check out the video below:

(Full Disclosure: TVGuide.com is owned by CBS, one of The CW's parent companies.)