I've been looking around, and indeed, they do make some beautiful stuff.
More info about Cyfac
here and
here. Cyfac
had a booth at NAHBS, but didn't bring a tandem (they should have!).
For the adventuresome, here is a
Cyfac Le Duo Carbon Tandem 2010 Frameset in Indonesia for
$4289 USD, with free shipping.
Hmmmm...what's with Indonesia? Here is another
2010 Le Duo Carbon Tandem for $2940, and $200 shipping.
Here's another carbon Cytec, for $4800 from
Trek Bikers Co. a 'Manufacturer, Distributor/Wholesaler' in Singapore. The availability of these frames in Asia suggests that they are being manufactured there. The $4800 cost is about half the $9800 price at R&A, suggesting a wholesale vs. retail cost.
Here is a non-discounted Cytec Carbon at Amazon, Japan, for ￥ 957,000 ($10,357).