Plot hole: In 'Oasis,' several times in the episode, specifically when they took Trip captive, the holograms appeared out of nowhere brandishing weapons. The holograms can walk through walls, which we saw, but the guns were real. We saw them hit the deck when Liana deactivated the holograms. So how did they appear with the guns?
New this month Plot hole: Captain Archer does not know how to drive a car, but he is from a time when they had cars, and Trip even says in a previous episode that the escape pod him and the princess are in reminded him of his first car.