I once had the distinct displeasure of hitting a swarm of bees at 25 mph. Mostly, they didn't get their asses aligned opposite my direction of travel, but one or two did. I ended up picking out a stinger once I'd passed through.

Another time, Rango and I once encountered a similar swarm, directly across our path. I heard the buzzing first, then noticed all the little flying thingummies. As we stood there, I noticed the swarm was moving slowly to our right, so we just waited till they were out of our way.