Rubbish - there would be a video of them on a test track. Much like all the videos proving quite how fast the cars can go. You don't drive a McLaren F1 at 240mph on the Interstate and post it to Wired expecting to get away with it...

They did not only risk their own lives. They put other people around them at an increase risk when it was unnecessary. That is the argument, that it was not necessary. This same demonstration could have been done on a track or other controlled environment where the public was not in danger.