Crew or equipment visible: When Bardo is seen walking down the street, you can see the visible breath of a crumbier on the right side of the shot. This is apparently due to the cold temperature on the night this was filmed.
Revealing mistakes: In the scene where Bardo is hit, the view through the windshield from the inside towards the front shows that it is completely intact. In a reverse shot immediately following this, and just before Bardo goes through the windshield, you can see that the glass is cracked. This is likely to facilitate the stuntman going into the vehicle instead of bouncing off of it when he is hit.
Revealing mistakes: When Bardo does hit the windshield, it breaks rather large, jagged pieces. Automotive windshields are made from a laminated safety glass. They do not break in sheets, but instead "spider-web" when they are struck.
Revealing mistakes: Mena Suvari's character steals the neighbor's newspaper to look for a story about the accident, which occurred after 1am that same morning. That time frame for going to press is just not plausible.