Spaceship2 designed with "open architecture like Linux"

[Patrick]

http://arstechnica.com/news.ars/post/20 ... linux.html

Pretty cool that these guys are Linux savvy. I'd be curious if they use any F/OSS software. I remember watching a very good documentary about their efforts to win the X-prize competition on the Discovery channel:
http://www.imdb.com/title/tt0444961/