If anyone wants to see a perfect demonstration of the faster car that can ' t pass the slower car , Button trying to get by Petrov in the first few minutes is a prime example . <| sep |> I see it but I dont understand anything . Can anyone explain to me what am i looking at ? pretty late where i am . sorry shy <| sep |> Assuming that twice a year means every 6 months , then about 34 months from now . <| sep |> I ' d like to say a few words . Ahem . George Karl is a goblin . <| sep |> lttam mr az ltetvnyt is amgy <| sep |> He does mean tailwind , a tailwind lengthens your takeoff roll and increases ground speed at rotation but does NOT increase airspeed at rotation Vr which is determined by ram air pressure using the pitotstatic system . The simplest way to look at it is groundspeed is airspeed corrected for wind , so a tailwind would give you a higher groundspeed at your usual rotation airspeed Vr and thus you will spend more time on the ground and use up more runway before taking off .