Just noticed OSM has overhead power lines on their maps. A quick search reveals GM either doesn't have that data or doesn't have any way of displaying it. +1 for OSM in my book.
(and sometimes what the community decides, e.g. adding things that can't be seen anymore, like old tram lines, is generally frowned upon in main OSM and requested for something like Open Historical Map instead)
(and sometimes what the community decides, e.g. adding things that can't be seen anymore, like old tram lines, is generally frowned upon in main OSM and requested for something like Open Historical Map instead)