I'm trying to recreate the effect on 
http://maps.forum.nu/gm_driving_radius.html#
except in my version I want to have multiple starting points that
overlap. Here is what I have so far: 
http://www.harfordhackerspace.org/membermap2/

I'm using Firebug to trace what is happening and for some reason it
seems that gdir.load never fires off the event listener:

    GEvent.addListener(gdir, "load", function(){
        var status = gdir.getStatus();
        var bounds = gdir.getBounds();
        var distance = parseInt(gdir.getDistance().meters / 1609);
        var duration = parseFloat(gdir.getDuration().seconds / 3600).toFixed
(2);
        var polyline = gdir.getPolyline();
        shortenAndShow(polyline);
    });

Just FYI the reason I am building this is so I can enter the location
of each of my club members and the distance they are willing to drive
and have a vindiagram type graph. Where ever the most members
intersects is where we will focus our attention on renting or
purchasing a piece of real estate for our club.
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