Here is a video of me for reference:

https://www.youtube.com/watch?v=ynGVK8RQhTQ

Currently my setup for autocross looks like this:

- TrackAddict on my iPhone facing me
- Three GoPro Hero (one on each fender, one on the front) controlled by the GoPro remote
- BT1 OBDII sensor
- External GPS

The ...