Well that is unfortunate, Waze is a great community that showed what is possible with crowdsourced information and keeping people from getting as many sepeding tickets
If you actually care about crowdsourced information, please consider contributing to your local area in OpenStreetMaps. There's way more to crowdsourcing than just avoiding speeding tickets!
Indeed. I update it regularly through OsmAnd. It even has a google traffic overlay. Waze users can slide over to Magic Earth and start reporting traffic, construction, and speedvtraps over there and automatically start using OpenStreetMaps!
Yes, you can report police cars. The problem with crowdsourced data, is it requires a crowd. This is why I encourage everyone to hype Magic Earth to people who love waze.
Until cities started going "hey, why do they have more info about where our cops are than us" and threatened to sue. Last I heard, that feature was banned in several states.