SRT8 Hellcat

Leno goes over the car, Pretty good overview

That was a decent review. First I had heard about the valet option where it would limit the horsepower to 300 horses in case you were having the car parked and wanted to make sure you had some tread left on your tires when you picked it up. I had heard about the black/red key option that would limit it "just" to 500 hp for your wife, but this was new.