We need a system like this for our cars. Whether or not you get attention in your cat, that you're aware of, is one thing. How much unseen attention you get is another.
At this day in age, EVERYONE knows what a hellcat is based on the badge. There are haters out there and there's no telling what happens when you don't have your car in your direct view. They should have this system for any car over a certain price point (i.e. $50,000).