The O'Reilly Auto Parts Spring 4-Wheel Jamboree Nationals Presented by Jeep got off to a great start on a bright sunny day....first one in a long time as you can see by the mud in the infield! Mud Boggin'....Mud Drags...The Mickey Thompson Tough Truck Challenge...The General Tire Monster Truck Thunder Drags...and of course lots of 4-Wheelin' Fun!