The video below is showing a new design for an arch top guitar. I think that the ideas for the bridge and tailpiece could be used for a CBG.
Thank you for the link - I found a review on youtube http://www.youtube.com/watch?v=bnr8NorNg8E and following the link to more info http://www.acousticguitar.com/article/default.aspx?articleid=22865.
It is an interesting design but for $30,000 I am surprised it hasn't got top of the range pickups/preamps/unlimited beer tap. As someone pointed out on youtube it does sound a bit like a banjo.
It makes me wonder what type of cigar box guitar Ken Parker could make.
Yep , believe it or not, these things can be built with traditional, and non-traditional, lutherie techniques.
Which also means that you can do just about anything to these that you would a regular guitar.