How retailers are trying to beat the same-day delivery odds

Uber has rolled out UberRush to three cities — New York, Chicago and San Francisco — and partnered with six e-commerce and delivery platforms, like Bigcommerce, Shopify and Delivery.com, to enable small merchants to provide same-day deliveries.
The goal is to help the merchants expand without spending on more delivery drivers.
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Amazon and Target are still limited to offering same-day delivery to select cities. Amazon offers it in 14 metro areas, while Target’s Rush Delivery is available in three cities.
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Same-day delivery for all customers is tricky because it’s tied to areas near distribution centers; according to a recent study by L2 with RichRelevance,  fleets of on-demand drivers like Uber’s have made rush delivery more feasible, but it’s too soon to tell if the approach can scale. 
http://digiday.com/brands/retailers-trying-beat-day-delivery-odds/