Paranormal Activity 3 (2011)

Revealing mistake: While driving the Mercedes to the house of grandma, the gauges on the dashboard show speed is zero and the engine is cold.

moviemaster101

Trivia: The movie takes place in the 80's, and is supposedly being filmed on an old VHS camcorder. In actuality, it was filmed on modern-day HD camcorders, and digitally "aged" to look like old VHS footage.

TedStixon