Always the Last to Know: Mapnificent

OK, I haven't quite been able to work this yet, because apparently I'm a doofus, but Mapnificent is a Google maps mashup that helps you figure out how far you can travel by combination of public transportation and walking in a given amount of time. It's been rolled out city by city and (of course) it's already in DC.



It sounds cool - anyone figured it out yet?