It's easy to just run to the store if you need toilet paper or oranges now. But what if you're looking for uranium ore or a Badonkadonk land tank? Impatient Miami and Baltimore residents will now be able to get such products in one or two hours (or less), thanks to the arrival of Amazon's Prime Now delivery service. This marks the first expansion of Prime Now, which has only been available in Manhattan and Brooklyn so far. Amazon promised to eventually bring it "to a city near you," but to do so, it needs to have fulfillment warehouses near urban centers.