Jensen Ackles actually did the stunt fighting in the car and the reverse 180 driving stunt after Baby crashed.

The whole episode takes place inside the Impala. This concept of restricting the show to a limited premise is known as "bottle necking" the episode

This is the first and only episode to have no soundtrack. All the music in the episode can be heard from Sam, Dean, and/or Baby's point of view, such as Dean's tapes in the Impala, music in the bunker's garage, or music coming from the roadhouse.

Highest rated episode of season 11

During a convention, when asked about ad-lib scenes in the show, Jensen says the moment in this episode that shows the boys eating and laughing was a Jared and Jensen moment, not a Sam and Dean one, because they had to spend so much time

driving the car around with all the rigging in place to get filler shots. #Supernatural @tntdrama @IMDbTV @jarpad @JensenAckles