The KinerBakfiet!http://rollingorangebikes.com
these guys have some nice Cargo Bike options
I really dig this KINDERBAKFIET!
the initial purchase would be expensive
but to get one as a "hand me down" would be awesome
this set of random tangents is well worth a glance... I love the random connections on the gwadzilla page!
http://gwadzilla.blogspot.com/search?q=trike