If you haven't seen the article by Tom Clynes in this months' Bicycling Magazine, you ought to check it out. The article is titled, Cargo Bikes: Is This The Coolest Bike Ever Made? It's a perspective on the growing interest in -- you guessed it -- cargo bikes. It's a pretty comprehensive article, covering a variety of facets of interest, and he checks in with manufacturers both large and small.
I quote here the final paragraph, which gives insight into the rest of the article:
It's then that I see, in the parents' faces, what Dave Cohen calls "the politics of possibility." I could tell them all how green my bike is, how cost-effective and healthy. But in the end, what they see—and take away—is how much fun it is to carry people and things around under your own power. In the delighted faces that surround me, I can see the possibilities opening up. In practicality, it seems, there is joy.
Also, there is a somewhat breathless quote in the article by yours truly:
For eco-conscious cyclists like Joseph Ahearne, a Portland bike builder, part of the allure is making a statement. "Every time I'm on my bike with a big load of stuff on it," Ahearne says, "I can only hope that some people in cars see me and are already so frustrated with traffic and the costs of fuel and car payments and the roll of fat falling over their belts that they look at me taking care of business on my bike and feel something like envy. It plants a seed."