Walmart is testing its same-day grocery delivery service, part of its “Walmart To Go” offering, in Denver, Colorado, according to reports. The company has been testing grocery delivery in San Jose and San Francisco. For the Denver test, customers can trial the service on a first-come, first served basis only by signing up at Walmart.com/togo. There's a two-hour slot for delivery, with orders fulfilled by local Walmart Supercenters and delivered in Walmart To Go trucks. Delivery fees are reportedly in the $5 to $10 range. Same-day deliveries are available to orders received by 8:00 a.m. in the Denver area. To read more, go here.