Crazy Shadows on the Road 8/15/11

I was riding my motorcycle home from lab tonight and while I was on the highway I noticed that every time I passed a street light my shadow would appear ahead of me as I was going away from the light. It was really cool and I am going to try and post a video of it hopefully sometime this week. Anyways it was kinda creepy with the color of the light being this orange glow and then my shadow right ahead of me (As I am going highway speeds).