I just routed the ride I did from San Jose to Santa Cruz last week and it had me doing pretty much the same route. It took me the back way out of my neighborhood across a busy street where there is no traffic light (but there are bike lanes), but hey, it's pretty accurate. Although, as Google's HQ is here in the Bay Area, the accuracy here is not surprising.
I've never had issues with GoogleMaps here in California either. Although, my tool of choice is my iPhone map because that goes with me on rides - wish they had the same feature.
I do like the "You are Here" on the iPhone which has saved my butt many a time.
Christine
Life is not measured by the number of breaths we take, but by the moments that take our breath away.
Cycle! It's Good for the Wattle; it's good for the can!