We finally made up our minds to just do it. Take our two cameras, a tripod, and head up to Cincinnati's Devou park in the middle of the night to get a decent Cincinnati night-time cityscape! I thought it would be as easy as mounting the camera and letting the shutter drag a little to capture the light trails of cars shooting down I-75. But it turned out that shooting several (about 20) photos and laying them over each other as a multiple exposure was the trick. The results were impressive! It was, however, quite windy, so we had to watch out to make sure the camera wasn't moving around, because a deviation of even so much as a fraction of an inch would ruin the whole photo.