Halfway through I tuned in to the fact that it was going to be dark before I got back to my car. Almost the whole way back had sidewalk access and streetlights, but the last leg did not. Naturally I'd not thought to bring my LED light.
My workout clothes were light gray with white striping and my shoes have reflective striping but I was still a little concerned about cars being able to see me. At one point I noticed someone walking toward me. I couldn't see them, but they were on their cell and the glow from the keyboard caught my attention. That's when I remembered the free Flashlight app I downloaded a few months ago for my iPod Touch (watch the video for a short demo).
I used the app for the last half mile. Sure, I had to hold my iPod in my hand but it was a minor and temporary inconvenience. The Flashlight app is no substitute for proper reflective gear and safety lights, but it came through in a pinch and definitely made me feel better.