While set up with a tripod waiting for the Northern Lights to brighten, I could hear a semi truck approaching from behind me so I waited and tripped the cable release just as it passed by not knowing what to expect. To my suprise I was not only able to capture both the tractor and trailer lights but the Northern Lights as well. I can't wait to try it again when the Northern Lights are a little brighter. What fun. Cooper Landing, Alaska.