HD Zipp wheels

[John Riley]

http://www.bicycleretailer.com/bicycleretailer/headlines/article_display.jsp?vnu_content_id=1818492

Looks like an addition to already existing heavy duty wheels?:

http://www.zipp.com/Wheelsets/clydesdale.html

Little surprised I never heard of this group before:

http://www.teamclydesdale.org/

John Riley