For those who can't afford a GoPro..

[Danielzke]

If your phone survives

 

[PIR4TE]

Just bought this app that hooks in via WiFi to a Go-Pro to allow you to do the front / rear simultaneous view, plus hooks into the GoPoint OBD via bluetooth to get a range of PIDs as overlay.

Together with real time GPS you can render accurate logs complete with HD video.

Totally recommend it: http://racerender.com/TrackAddict/docs/GettingStarted.html and there is also desktop software to bind / mix channels from OBD into custom gauges / graphs http://www.racerender.com/RR2/Features.html
[video=youtube_share;SfTHANh83qc]http://youtu.be/SfTHANh83qc[/video]