my 2006 Christiania cargo trike.
was built up for me in Copenhagen and delivered via a specialist
bike shop in London. I then moved it to Boston with the rest of
my stuff in October 2006 - now it's what I believe to be the only
one of its kind in the US (at least on the East Coast!).
use it for shopping and schlepping the kids around; it's great for
cruising up and down the Minute Man bike path from Arlington, and
I've also used it to take heavy AV equipment into Boston for work.
box is made of heavy-duty plywood, and the rest of the bike is powder-coated
steel. The front wheels have disc brakes, and the rear wheel is
a coaster brake and Shimano 8-speed hub gear.
cover can be removed and carried easily, or the sides can be removed
if it's really sunny or just a little rainy.
really easy to ride once you've got the hang of it!