I don't know... I don't *think* so. I think it is vented somehow (I know there's a vent on the tube 'cause the LBS guys were speculating about it).

It seems the idea is catching on -

http://www.dutchbikes.us/ is a company that imports some brands of Dutch bikes (tho' not the Gazelle, I don't think) - I got a sweet deal I think it's a new company.

Electra's just come out with an "Amsterdam" model http://kensbikeski.com/itemdetails.c...gId=39&id=1743
http://www.electrabike.com/06_new/flash_index.html

Seems the entry level model just has a coaster brake; mine has internal hub brakes and cost me less :-) (I suppose they are disk brakes? I dunno, they work )