Dutch company, SmartTrike, makes a fantastic cargo tricycle that comes in a variety of configurations. In the photo from their website, you can see two versions, the kid carrier and the basic cargo box. The tricycle is also available in a other models such as a solar powered icebox version for vending ice cream and soda. Also, the cargo box is available alone as a push cart for vending and moving cargo.
Similar to other European luxury cargo tricycles, the SmartTrike comes with a hefty starting price of € 2199 Euros ($3000 USD). The tricycle looks great and has many useful options like power assist & onboard lights. However, it comes at a price only a few can afford.
Hopefully enough early adopters will buy these great tricycles and bring the price down to a family budget.
Check out their website at: http://www.smarttrike.com