I remember Caspar got a cargo bike for us at metro once.No bugger wanted to use it though.If you cant get through the gaps in traffic what's the point?You just end up taking in more car fumes whilst waiting for the f*cking road to clear.
I guess you need a situation like Copenhagen where they're widening the bike lanes to accommodate the amount of cargo bikes on the road, but then again I hate bike lanes... There was one cargo bike in Cyclone Dublin a few years back that was used during the long departed christmas week rush. You could load so many bottles of wine and shit in it, ker-ching!