Google Maps friends bikes

I really like to bike. And I like Google Maps. Now I can combine those likes as Google rolls out bike route layers and directions for Maps. Lots of Madison data. Below is a route spit out, which exactly matches what I would take, including the alternate routes suggested.

Also over on the LatLong blog are some interesting details of how it was implemented. Not satisfied with a simple shortest path from A to B for directions they actually incorporate a physical model of the exertion required for a rider based on the topography of the route. See car drivers, when biking you exert yourself which makes good exercise and feels good.