Spotted this ride outside BSR in North Boulder. The frame has what looks like cardboard, but is actually a steel plate welded in the front triangle that was cut to say some team name. The guy took a lot of care to weld it all the way around and then grind it down so it was super smooth. Even left a place to grab the top tube through!
The next wave in cycling style?
Probably be a nightmare with the 40+ mph winds we've been having though!