According to Daniel Danker, Vice President of Product at Instacart, the company will launch a 30-minute priority delivery service for 300 stores in 15 metropolitan areas.  Participating chains will include Ralph’s, Safeway, Sprout’s Farmers Market and Stater Bros.  With priority delivery, customers will be able to receive orders within 30 minutes.

It is questioned whether a 30-minute delivery time is warranted for groceries and at what cost.  A rapid response to an order to fill a prescription may be justified but a launch of an expedited delivery service to obviate "quick runs to the store" is questioned.