It's a Camaro, unknown age, badged as a ZL1, and has a monster 572ci big block under the hood.

An obviously functional ram-air hood.  Open exhaust that turned the grass under the car Black!

They had a lot of trouble getting it started.  Flooded the first time.  They went away for about an hour

and then finally got her going.  Unbelievably loud!  When it was finally idling, Jon just sat there for

about 5 minutes, looking real serious, goosing it and then letting it idle.

As usual, he signed a lot of autographs.