Vance speaks of Cooter being inside the Mean Green Machine tank with the mercs, yet he would have no way of knowing that Cooter would be held hostage inside the machine; all he knew was that Cooter had been kidnapped to perform repairs on the machine.
The mercs are driving a white van, yet Uncle Jesse describes it as a blue van.
The two mercs are shown to both be looking out through the moving tank's observations-slits at the Dukes in their car, yet the General Lee is behind them, so they would be driving blind if they were both crouching by the rear slits and observing the car together.