NPR had a piece on Streit's matzoh factory and the 18-minute time limit for Passover matzoh. The younger generation has committed to staying with their grandfather's business, in its current location, despite offers to buy up the property for condominiums.
I can't find a link for the transcript of the NPR story, but
here is a write-up on the Streit family dynasty and the making of matzoh-for-Passover.