so far, i havent found a quick way in google maps. are the road
segments in mapmaker embedded with tags that somehow indicate the km
posts that they contain? if so, then that's one work-around. ideally,
when you mouse-over a road segment, the km post # should be displayed
on some status line, just as the long-lat figures of the current
cursor position can be displayed. i really don't know, since i'm not
really a google mapmaker user.