Continuity mistake: Bill's car has narrow whitewall tires when he pulls off the road, but in the close-up of the tire when Ralph lifts the car, instead of a whitewall tire there's a Bridgestone tire at the front passenger side.
Continuity mistake: When Ralph lifts Bill's car the first time, the blue license plate on the front bumper is gone, but when Ralph is amazed at the suit's power he lifts the car a second time, and the blue license plate is in its proper place on the bumper. (00:35:50)
Revealing mistake: When Ralph stops the hijacked train before it reaches the city of Bakersfield, due to the close proximity of the camera it's too obvious that Ralph's footwear has been altered for the stunt, as he glides across the tracks. (00:44:30)
Continuity mistake: When the engineer shuts down the train he's wearing a long sleeve jacket, but in the closeup we see a bare arm wearing a watch. The terrorists remove that engineer and he's replaced with McGivers, another engineer wearing a jacket, and the same bare arm is in closeups. Then a third engineer on another train has the same arm in the closeup. (00:06:40)
Deliberate mistake: After Ralph puts the suit into the trash can, when it cuts to Stovington Siding with the hijacked trains one of the shots is flipped, note the "102" is backwards. (00:24:40)