A vehicle driven by rednecks.  For example: old Jeeps, or large dirty beat up trucks or SUVs such as a Chevy, Dodge Ram or Ford F-series, thats atleast 20 years old.  Sometimes has a lifted suspension with off-road tires, and a confederate flag license plate on the front bumper. 

BillieBob bought a '86 Chevy Suburban redneck mobile off his Papa for 200 bucks.  Now he's jacked up the suspension and drives it 80 miles an hour around the town.