Just came across this hilarious film made in Utrecht, The Netherlands, which you and your child might enjoy watching together.
Utrecht was the "grand depart" city in this year's Tour de France, and this film shows the streets bustling and burgeoning with everyday folks using their bikes to get around town.
It is a must see for bike lovers, and gives a great example of how much better our bike infrastructure could be here in the Bay Area!
Disclaimer: there are very few helmets (and little spandex) in this film. In some parts of the world, cycling is as safe as walking, and used primarily for transportation.