Some neighborhoods in Portland require you to move your car when street sweeping is scheduled. I now live in a neighborhood where the street sweeping is apparently random and occurs without any warning. I usually jump up run out and shuffle my cars. I would love to see an app that alerts me to the street sweeping schedule so I can move my vehicles. Other then making my street clean it removes build up in front of sewer drains and other debris that plugs the sewer drains and causes local flooding.