Create a driver profile on the Bullrun website. Along with the basic information like a username, you will need to provide a description of the car you would drive for the show, your team name and the name of your other team member. Also include information about your goals and a bit about who you are personally.
Record an audition video of length five minutes or less that shows yourself and your teammate, your ride, your driving abilities and why you would make a great addition to the show.
Upload your video to the Bullrun website. The casting directors will look over all the videos submitted and select drivers.