Ellsworth, an American made bike manufacturer, which are hand crafted and build to quality. I first laid eyes on her back in 2005 and almost wanted a piece of it last year but stop short due to the fact that the technical support is very limited in Asia. The frame design and paint work are very beautifully done. The bikes are designed with no Energy loss using Instant Centre Technology (ICT). However for a beautiful piece of craftsmanship frame, expect to pay at least twice the price of Giant Trance X frame. I guess Ellsworth Witness is the only off-road Tandem in the world, wonder how it would hold up going offroad.
Below are links to the new 2009 line up.