@mlanger I've a friend who hoped to depart his campsite before the throng arrived, but was "off" by a few hours of overlap during which they wouldn't keep their noise down while he tried to sleep. .... Early the next morning, he packed up his Harley and backed it up to their tent entrance ....

and started it, which as you may know, blew a bunch of carbon and oil out the exhausts; as he rumbled away he spotted half a dozen blue-faced pukers stumbling out of the tent.