http://www.rdmag.com/News/2009/11/General-Science-Robot-goes-all-the-way-in-space-elevator-competition/?wnnvz=cIpb87iV1KLyCnDk

Powering a cable climbing robot using 400W " laser to photovoltaics "  
power transfer

What happens if a bird or skydiver gets in the way ?

Gus
-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist