[Randallw]

I read a review saying they decided to take a different direction when they got carried away. Apparently driving around in a car with a cloak is too unrealistic.

I once read though that back in the 60s they had a movie with small underwater breathing devices, sort of like the scuba masks the Jedi in Phantom Menace had. This bloke had been working for years trying to develop such a device and when he saw the movie he insisted on seeing the developers. Apparently it broke his heart when they told him the actors just held their breath.