For some people yes. But let's take kind of normal scenario, accelerate quickly in either a manual car or manual/sport mode on an automatic, merge into lane, then let off throttle to scrub off excess speed you might have to match the car in front of you. In the normal case the guy in the lane behind doesn't really need to do anything. But since you let off the throttle to scrub some speed off, your brake lights turn on. So really, you look like an idiot because your accelerating and immediately flashing brake lights on the highway. Let's take another case where you're just a fast driver. You can accelerate on empty sections of the highway and slowdown gracefully before the next bit of traffic without too many people being alerted to what you are doing. In a Model S, you have to carefully feather the throttle while having the rear view camera on, lest your brake lights turn on and alert everyone that you might have been going at extra-legal speeds.