This ad has an unfortunate warning triangle blinking at the very beginning.
Media Spy has this info about the warning triangle that appears in the ad (*edit: I mean Agency Spy, that whole "mediabistro" url messed with my head while I was typing)
"During the filming of our latest E Class television advert, the vehicle was significantly altered to create an environment conducive to filming the interior of the vehicle. As is typical in such a situation, doors and seats were removed and a number of features deactivated in order to allow the camera rig access. The vehicle's safety sensors performed exactly as they should and activated a warning signal indicating a disruption of the vehicle's Supplemental Restraint System.
The fact that the image -- which is visible only in a frame by frame review of the ad i.e. not by the naked eye -- was not edited out of the advertisement was an oversight and has subsequently been corrected.The E Class is the most tested car we have ever launched and reaches the highest quality levels we have ever produced.
While this is a mistake in the editing process it is in no way a reflection on the quality or durability of the E-Class."