The Manager said that Michael and Sarah went the wrong way when they left the diner. Said they went right when they should have gone left. Well, they pulled into the diner on the right, so to continue on their way, they would have pulled out to the right.
When they found the destroyed car and said "it's our car" it clearly wasn't! They were driving a Kia Soul and the destroyed car was a Chrysler PT Cruiser.
How did Sarah's father know it was she calling when she rang from a payphone and didn't say who was calling??
They used 2 completely different generations of Kia Soul within the first 10 minutes of the movie.
Both cars have completely different front ends.