 CONT: Supposedly, Cheris story takes place in 20 minutes, assuming  the clocks are correct. But from her introduction at 10:54 until  11:14, what we see happens in about 18 minutes. This means that in  that extra two minutes, Cheri had time to hook up jumper cables and  do a jump, make two car trips and run from her house to the cemetery  and back, among other things.