After 30 minutes of loud, metal-crunching fun, the only RV still running – albeit barely – in the Motorhome Madness Demolition Derby at the Orange County Fair was the big black Class-C motorhome with “POLICE” inscribed on the sides and “CHIEF STU GREENBERG” painted in white letters along the front. For the second time in as many tries, Greenberg won the vehicle-wrecking free-for-all pitting local police and fire chiefs against each other. The demolition derby took place Aug. 5 at the Orange County Fair’s Action Sports Arena. https://youtu.be/eb4Ttii3vFw Greenberg employed the same strategy he used when winning the event during…