Continuity mistake: When 14k is killed by the Dreadnought, there is one shot of the tank barrel on the Dreadnought pointing straight and then lowering to face 14k's car. There is a shot then from the side of the Dreadnought speeding along with 14k's car on the trap, and the tank barrel is back facing straight ahead. The camera then cuts to a shot from in 14k's car and the barrel is now pointing down at 14k's car again. There is no time for the barrel to move that fast.
Continuity mistake: In the opening sequence, the dodge ram gets wrecked by the tombstone and has what looks like 2 working RPGs on the roof remaining. When he lines up the shot coming up to the finish line, there is a view of the roof showing a fully working rack of RPGs and no damage to the car.