SO, as a 100% bike commuter for the last ~4 years... I find this map to be interesting and definitely beautiful -- but utterly useless.

What I would love to see is: Given two points on the map - what is the most common path between them based on multi-path tracks of others...

What were their avg speeds along those routes.

How frequently did they stop.

Also, looking at SF, clearly there is no bike path across the Bay Bridge (as an aside rant, how did we spend $7.5 Billion dollars on half a bridge, adding no additional capacity and no full span bike/pedestrian throughway)...

It would be great for this map to ID bus/bart/public transit options that connect across such things like the bay bridge.

Also, the fact that the dark red is the more trafficked route(?) that was completely non-obvious to me....