First to be filmed, at least.
As is pretty much always the case with these street racing videos, this one won't prove anything about the cars involved. The Hellcat is stock, but the cars it's racing against aren't, so don't let this influence which one you buy. That said, we have the classic American matchup here, Challenger vs. Camaro vs. Mustang. The Camaro is apparently the most extensively modified, with a new cam and a 150 shot of nitrous oxide, and possibly more.
We don't know what's on the Mustang, but we're told it's been modified. It's fun to watch, whatever it is.