Would Headlights Work at Light Speed?

If you were driving at the speed of light and turned on your headlights, what would happen? Twitter: Instagram: Sources and extras below!! Thanks to Jude for asking me this question on twitter! “The Life of the Cosmos” by Lee Smolin: “In Search of the Multiverse” by John Gribbin: “The Pig That Wants to be Eaten: by Julian Baggini: Relevant MinutePhysics videos: light slowing down in glass: a different perspective from Sixty Symbols about light slowing down: Why is “c” the speed of light?