One thing I could do is outright prevent submissions with coordinates
that definitely lie outside of NYC, like that one from Illinois above.
That could be a simple bounding-box check, or something more
sophisticated using a GeoJSON file that has polygons for each borough (I
already have this for electric-citibike-finding purposes)
From https://reportedcab.slack.com/archives/C9VNM3DL4/p1677969946066369?thread_ts=1676288095.715499&cid=C9VNM3DL4:
Note the TODO comments in the code