Yep, the couple is in for a long, costly defense...which will most likely end bad for them. If I followed every jack-hole that drove like an idiot around me, I would go broke filling up my gas tank. As it has already been mentioned, take a deep breath, yell loud expletives inside the car (unless little one is present), continue on your destination. If you are dead set on trying to piss in their wheaties, call local LE and report them. Don't follow, don't escalate the situation, or you could end up right where these two jack-wagons are. But as these two have learned, if you play stupid games...you win stupid prizes.