The fully customized Red Demon Challenger a collaboration between master builder Steve Sanderson and legendary designer George King of Kustoms Barris, the man behind iconic cars such as the Batmobile, General Lee, Munster Koach, and Beverly Hillbillies truck is certainly one hellish ride. It packs a truly demonic 6.1 HEMI V8 supercharged to 625 horsepower under the hood, with an outer shell of sculpted Barris bodywork, 3D Carbon Fiber…