Actually this project stemmed from trying to figure out what to do with the boy during school holidays. (So he did not sit on the console all day).
This can be considered creative parenting. He gets to learn a couple of new skills, he gets a sense of accomplishment, he gets quality "dad" time and he has to work on it outside.
The fact that we are building it for racing games is the "carrot"
Oh and he plays baseball, so we have bat and ball covered
Funny enough ... another win for gaming. He got a love for baseball from playing the Wii. I personally like my sports to have more contact in them, like Gridiron, but he loves it so I watch him play every Saturday morning. (Hmm ... wish they played in the afternoon ... at least then I could drink beer while watching