Don't Try This At Home......

I drove to Columbus last Saturday to see my mom. The weather was awful, cold and rainy. I noticed the clouds in my rearview mirror. I thought "Wow, this would make a cool image. Longish lens, slow the shutter speed to blur the background while the reflected image is fairly sharp."
I grabbed my D70 from the back seat. It had the 70-300 on it, so I had the lens I wanted. My only problem came from the fact I was traveling by myself. Don't try this at home, y'all. I had to look through the viewfinder to line this up. I to wait til there was no traffic around me, and at the same time have a decent image in the mirror.
I popped some frames and decided I should pursue this idea when I have a traveling companion who could take the wheel. A shot with a wide angle might be nice as well.