The other night on a quick trip to the grocery store I saw the following:
A man in bright red-orange pants, curly hair flopping in the breeze, riding a step through bike with coat guards.
Two men arriving at the store with new bikes which looked like they came with dynamo lighting as a standard feature.
A grandmotherly looking woman riding down a residential street, helmetless.
A 20 something guy riding with a young lady sitting sideways on his bike rack.
So Cambridge is not Amsterdam yet, but I'm seeing lots of the things you see there, which makes me very very happy.