Google Wants to Make Silicon Valley as Bike-Friendly as Copenhagen
I do laugh at the image of society at large switching from cars to bikes.  At the moment biking is dominated by young fit and generally healthy people.  That may be silicon valley but it isn't the general population.  I see lots of young parents going to work by bike, but do they take their kids to school on bikes?  Does grandma get to the doctor on a tricycle?And what about the growing number of people who need to be brought places, who cannot drive themselves?  There are a great many people with special needs/requirements who will never be able to move themselves safely by bike or any other vehicle.  They and their carers should not be cut out of city planning, nor should they be confined to special communities.