Same-day delivery for local parcels (such as documents) has long been available by local courier. Rail and air transport made same-day delivery feasible over longer distances; for example, packages shipped in the early morning can be delivered (at relatively high cost) anywhere in the mainland United States. Retail goods were seldom sold with shipping any faster than overnight. Some online grocers such as AmazonFresh and Webvan, and delivery services operated by grocery stores like Peapod and Safeway have had same-day or next-day delivery windows. Many restaurants have long delivered takeout locally on-demand, and online food ordering services have expanded this to many restaurants that would otherwise not deliver. In the 2010s, various experimental services launched, using online shopping and retail warehouses or chain stores local to the ordering consumer for fulfillment at relatively low cost. The United States Postal Service "Metro Post" started in 2012,[8][9] which by 2014 was shipping Amazon orders to 15 cities.[10][11] In 2013, Walmart was delivering same-day packages from its own stores in test cities[12] via UPS.[13] Kozmo.com started a general one-hour local delivery service for small items in 1998, but failed in 2001. Same-day retail service Postmates began in 2011, and Google Express began in 2013 with a limited number of vendors and cities. By September 2015, Amazon Prime Now (which includes selected goods including some groceries) offered 1-hour delivery in 13 cities,[14] and the company launched Amazon Flex, which is a service similar to Postmates using part-time workers to deliver Amazon Prime Now packages.[15] Some vehicle for hire companies offer courier service and delivery of items ordered online from local vendors. Startups with similar services include Doorman in San Francisco, Chicago, and New York City,[16] Deliv in San Francisco, WeDeliver in Chicago, and Shutl in Manhattan and Chicago.[17][18]