Here's another BRILLIANT photo I've got from your webcam.

[Linked Image from i116.photobucket.com]

Now, I ask you some questions to try and prove my point of view.
1) Car headlights usually shine outwards then travelling in tube shapes.
2) They seem to be moving forwards. Lights down streak like that unless if the cars where reversing real quick, or driving forwards with real bright reverse lights.
3) I see no cars, and you can see around the lights without anything obstructing it.

I'll admit I'm wrong if you can prove it, but otherwise, they're spirits. happydance