This thread is about how closely to follow a moving car. The worry is if the moving car suddenly switches to being stopped. Will you be able to also switch to being stopped before hitting it?

Yea, some people seem to miss that just because the car in front of you can jump over in another lane doesn't mean you can at all. If you have a car beside you, and the car you're tailgating does not, then you're screwed in an emergency situation like this.