So I borrowed a friend of mines headrest camera mount a few weeks ago for a couple of sessions at a track event. I asked him what he paid for it, and I was shocked when he told me he paid $100+ for it

The one he has is made by AMT Engineering and looks like this.
After he told me that I started looking at it and started thinking I could make basically the same thing for under $20. Might not be as pretty, but that's ok.
That evening I Googled "headrest camera mount", and apparently many people have already come up with the same homemade idea.
I based my thoughts for a starting point off of this image that I found on Google then made it my own from there. Once I had my thoughts together I headed to my local Lowes.
I grabbed a 3' length section of aluminum 1" square bar, and a couple of U bolts and 4 wing nuts for less than $13, then headed back home to start my project.
I originally thought that "bridging" the mount between both seats would make the camera more stable, but I was completely wrong. It actually made the camera bouncy while driving, which I noticed during playback. I never noticed but without a passenger the passenger seatback kind of bounces around while driving. Maybe with a passenger holding the seat still, bridging the mount would be ok.
Next I cut the square bar down and just mounted it to the driver seat and took it for a spin. The jitter was gone now during playback.
Anyway here are some photos.....
Bridged between both headrests..
The longer version painted matte black
And the shorter finished product with 3 holes for different camera mount options..
To mount the camera to the bar I took off the suction cup section from my Fat Gecko, and it just simply bolts to the bar. This also lets me quickly put the suction cup section section back on when I want to mount the camera outside.
To protect the headrest bars and to also help the u-bolts clamp better I sliced some blue silicone hose I had laying around, which just slip around the headrest bars....
And test fitting the final product.....
I may cut it down a little more as there isn't really a need for 3 camera mount positions. I also may repaint it in matte black again.
And here is a short vid.........
Anyway.....thought I would share, thanks