I witnessed a swarm in motion tonight. I had left work, about 5:15-5:30pm, was driving in traffic and drove under a swarm. What a sight! I made a turn around as soon as I could so I could get another look, but I was too late. They were gone. I was so happy they were flying high enough to avoid traffic. I even double checked my car to make sure I hadn't hit any of those little honey filled girls. Since no one else was hitting their brakes, because I probably was, I have to assume they didn't see them or didn't know what they were seeing.