The obvious research question, is: "By whose criteria is google maps judging space to be cyclespace?"
After sleeping on the above...
Since the purpose of a maps google layer, is to sell advertising space to people who would bring up that layer, it stands to reason that google would want cyclespace mapped by actual cyclists (with the exception of poor ones). So I can put aside conspiracy theories, about motoring groups coming up with ways to get cyclists out of their way. Maybe someone connected to a cycling body, who google contacted, nominated W106 St. for the sake of simplicity. After all, it is merely a thoroughfare between two parks, not somewhere a cyclist would wish to linger.
Your input here would be greatly appreciated!!!