Trek 730, Bike Friday NWT, Brompton M6R, Trek 830, Dahon HAT 060, ...
Dream becoming reality? Nokian's on-demand studs
When suffering while riding with studs on pavement, I often wondered whether a day might come when one could press a button and have studs emerge from the tire or hide. My more wilder dreams pertained to an adjustable tire thread. Now this seems to be getting closer to reality as Nokian has presented a concept car tire with studs that come out or hide: