XC90 Car Headrest Mount/Holder for tablet

This is a tablet mount for the new Volvo XC90 (2015-) and might work will the headrest of many new Volvo cars (V90/S90/XC60). Commercial headrests are quite expensive since the new headrests aren't standard.

I initially designed the complete system including my own Lenovo tab4 8" holder.
Once installed in the car I figured out that it would be great to be able to tilt the tablet. I bought a really cheap universal tablet holder with suction cup and redesigned my headrest base to reuse the ch