|You can outrun the zombie outbreak on a bike.|
You should go check out their web page, but I’ll give you the quick version. GeoTrellis Transit provides an API for answering questions about a travelshed. You can use it to figure out how far a commuter could get using standard modes of transportation from point A to a variety of points’ B.
|Can't beat rail for getting around.|
Presumably you’d use this for urban planning, decision making and such. Seems useful and it's fun to play with in a wonky sort of way.
The GeoTrellis example is right up top in WhirlyViz 1.3. Feel free to install that and give it a go. Tap and hold to move the travelshed’s center.