Unfortunately, Corbin Motors was unable to make the transition to high volume production where it would have become profitable. In the mean time, the Sparrow lived from investor funds while R&D and limited production continued. When the dot-com bubble burst, investors became rare and the Sparrow’s fate was sealed.
Sadly, Corbin Motors shuttered the doors in 2003. To this day you can still find Sparrows on the road and a lively Sparrow Owners Group on Yahoo Groups dedicated to keeping them alive.