No one will reveal how many red keys are out in the world. It's sort of a secret. But thousands of people have taken home red keys to their Dodge muscle cars that unleash more than 700 horsepower — ...

So, the Dodge Challenger SRT Hellcat. You know it has 707 hp. You know it makes people think you're speeding...at 17 mph. You know it has two key fobs—a red one that unleashes all of the ridiculous ...