The Starship was a production aircraft - I think dating back to before Raytheon bought Beechcraft, but I can't swear to that. I found out that it was a Rutan design (or that Rutan had something to do with it) only after meeting both Burt and Dick Rutan on seperate occasions.
As far as I know Burt was/is still flying his - I saw some footage of it chasing the White Knight, IIRC. I used to see one flying into Vegas airport on occasion as well...neat airplane. Never seen a model of one.