Here we go guys (and girls) ... the stl (and 3mf format) models for the contraption. It is free to use and modify as you please - just please give the proper credits if you publish it somewhere. The printing positioning captured in the files is the one that will provide the best printing results.
Use supports everywhere and print with 0.2mm layer (or more, if you have a bigger extruder). The material should be ABS or ASA due to their natural temperature and UV resistance - needed when it sits on a hot dash in the sun.
LHD files are for the ones with the steering wheel on the left side of the car (70% of the world basically) while the RHD are for the ones who drive on the
wrong left side of the road, meaning the steering wheel is on right hand side. This mentioning is needed because the model is highly asymmetrical, following the curvature of the dash.
This is the content of the attached zip file.
The print in the pictures is done using ABS (and it came out pretty nice, if you ask me

- black matte finish).
And here it is mounted on my car:
