Got my directions futzed up. I meant north of SFD.

https://goo.gl/maps/9eq5CT76j5Pe5D1GA

I drive that road quite often to get to Novato from Fairfax and I've seen some very hairy close calls with cyclists. I know there's a couple organized century rides that use this road. I can't remember if they close it down for charity rides or not.
I certainly wouldn't feel safe riding it.
Glad you like it, tho.