Police officers in a leprechaun costumes will patrol Las Vegas streets to test whether drivers yield to pedestrians. Awesome. Ummmm...if I was driving and saw leprechauns on the side of the road I think it might be a TOTAL distraction, and actually CAUSE some traffic accidents. Just sayin'...  I guess this is better than the Speed vans and Photo and Speed enforcement cameras we have here in Acadiana, though. Luck of the Irish, indeed.