Yep, its not real. I noticed the same thing when seeing videos of the new range rovers, but I couldn't find anything mentioning it. I thought that it might be kind of like hazard lights, but only when in off road mode or something. Then I figured out what it really as while playing around with my video camera. Any video below a certain fps will show that motion on the headlights. At faster speeds it doesn't do that. Its just like how computer screens sometimes look funny in videos.