Originally Posted by
Leisesturm
I may have missed the post that recommended some kind of Xtracycle wheelbase extension which would allow the mounting of a child seat and still provide carrying options for 'accoutrements'. That would be my recommendation.
Mundo | Yuba Cargo Bikes
Several different options including electric assist.

[h=3]For the whole family[/h]
The Yuba Mundo cargo bike has always been pretty killer. It fits nearly the whole family onboard--at least two kids and one adult, and maybe more if everyone is behaving. It's solid. We mean near-bulletproof solid. The thing rides like it's on a cushion of air. And it's got all the bells and whistles component-wise, which, for the rest of us, just means it works perfectly, and keeps working perfectly for years to come.