The dazzling discovery of an intact wooden chariot -- the only one ever found -- provides new insight into the social structure of the doomed city of Pompeii. “Last Days of Pompeii” premieres Wednesday, October 19 at 10/9c on PBS. [VID:Footage of an archaeological dig at Pompeii and expert interviews. Transcript: On "Secrets of the Dead" the first major archaeological dig at Pompeii in decades. Stunning discoveries. The new chariot, it's the Lamborghini of this ancient world. And a deeper unders