What do you know about Airblastr's setup?

Is he just using a gopro for the camera? How is he getting the rearward looking shots, just aiming the camera backwards and letting it roll and see what happens? I'm assuming hes not flying backwards for any of that. Anyone know what frame hes using?Been thinking about building a "camera rig" racer for awhile and think I might actually do it now. via /r/drones http://bit.ly/2RTYgfz