I live in Palo Alto and this is frequently true even though biking is definitely an afterthought in most cases. By car, I can get to work in about 30 min (+/-10 with traffic) but can bike there in consistency less than 20.
Years ago, I used to bike from Sunnyvale to Menlo Park once or twice a week, and 85% of the route was away from traffic. The delay was in crossing Embarcadero.