Pontiac designed a Hemi too

S'cuder said
Yes, Jay Leno has one he bought from the Chrysler museum the last time Chrysler almost went belly up. There's a few more out there. Harrah's museum in Las Vegas had one. I don't know where that ended up. Chrysler may have kept one still.

....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.