Because we wanted the design to be easily repeatable laser cutting and 3d printing were suggested.
Below is a laser cut plywood setup that is very similar to our concept with the steering wheel and throtal control. I have attempted to contact Antonio Gomes, the creator for more info, waiting on a reply.
Although 3d printers are not as readily avaliable, providing a link to a model, would make repeating this project much easier for viewers. This simple setup is similar to our concept.