thanks for the criticism, i guess all i can say is that it's hard to control people's braking habits and 6 seconds was as slow as i could go because it wasn't too dark out yet
set your shutter speed to really slow (here is 6 seconds)...you may or may not have that option if you have a digital point and shoot camera (which I'm assuming you do)...the taillights burn themselves into the image, i love taking shots like this
