http://www.n55.dk/MANUALS/SPACEFRAMEVEHICLES/spaceframevehicles.html

I was thinking about getting a recumbent bike for BP 16 to get from the camping area to the show. It seemed like a good idea until I saw how much they were  :'(  . That got me thinking about alternatives. After some googling, I found these guys who have open source plans. I think the desing could be improved by bolting on a VW lowback seat    . I wonder how hard this would be...?  Here is video of some in action:

They are awkward,  I prefer a regular bike,  dad has some he sold at the last show