Last Sunday, I had the pleasure of attending a pop-up two-way cycletrack, or separated bikeway, demonstration on Park Boulevard, put on by City of Palo Alto and Fehr & Peers consultants.Pop-up bikeways and other temporary projects, like parklets, are sweeping the nation as tools used by local cities and advocates to demonstrate how a potential project could work, gain direct feedback from people biking and walking, and generate support for new, innovative designs. They also help to educate people on how to use a separated bikeway - still a relatively new concept in California - and create excitement as people experience them firsthand.