Belt drive fixed

ive liked the look of those moultons for a while. theres a guy on the festival circuit who rides on old SS one between festivals with touring gear. he loves it but i have no idea how he can ride it so far and up difficult hills.

is there issues with the large belt ring rubbing the chainstay on track frames? i really want an belt drive 11 speed on a fast track bike.

Possibly, the belt ring is very wide.

This newer version might help when/if it comes out.
http://www.bikerumor.com/2010/09/15/gates-carbon-drive-introduces-new-lighter-centertrack-system/