I present a map type @dschep and I are calling the Fog Of War On Cars. It will mask of your area that isn't within 50m of bicycle parking as determined by OpenStreetMap data.
Here's what it looks like for Redmond WA, the supposed "Bicycle Capital of the Northwest".
Pan the map to your town an hit run. Let me know if you find anything interesting!
https://overpass-ultra.us/#query=gist:8aa0f652498160c3a51bde830b680bab










