Food cart business grows big by staying small

Portland, Oregon has been taken over by Pod People. But they're not snatching bodies, they're feeding them -- everything from kimchi quesadillas to chocolate caramel potato chip cupcakes. All served from pods of food carts populating empty lots all over the city.

Accounts differ, but there could be more than 500 carts operating in Multnomah County, with hundreds more awaiting permits. As a result, Budget Travel magazine recently ranked Portland at the very top of its list of the world's best street food.