Continuity mistake: Michelle ends the phonecall in her car at 6:27pm. When she regains consciousness in the bunker it's 6:29pm. Either she was retrieved from her crashed car, taken to the bunker, chained up and hooked to an IV in 2 minutes (impossible), or she's been unconscious for exactly 24 hours, which would be a sign of a serious brain injury (with no other symptoms). Either way something's not right.
Continuity mistake: At the beginning of the movie, Michelle's hair is at jaw line length. The following scene at the gas station and rest of the movie, it is a few inches longer, and even her bangs are longer also. (00:01:00 - 01:43:00)
