Pontiac designed a Hemi too

RustyRatRod said
....and he drives it! I don't know how regularly, but there's more than one video of him driving it down the road. That's just mega cool.

I think he wants to drive everything in his collection. He tries to have everything in driving condition, or at least on its way to being there.
Years ago, I remember seeing him on the tonight show with some actress bimbo as his guest. She said she saw him driving a jalopy in Hollywood or Burbank, or somewhere around LA. He sputtered and blurted out: "Jalopy?! That's a LeBaron bodied 1936 Packard Super Eight!"

RustyRatRod said
How many were made vs are left?

Not sure. I think there were around 50 made and lent out for real world testing. Most were destroyed. Maybe half dozen left?