TechCrunch reports Google Inc. has tapped Minneapolis-based Target and seven other stores in the San Francisco area to test its new same-day product delivery service. However, there's no confirmation from either company.

Google Shopping Express is designed to compete with Amazon Prime and Postmates.

For now, Google's same-day delivery service test is free for users who sign up for a free membership, otherwise it's $4.99 per delivery.

Wal-Mart began testing its own same-day delivery service in the Twin Cities last fall. "Wal-Mart to Go" costs $10 for an unlimited number of items.

A recent survey conducted by The Boston Consulting Group found less than one-tenth of U.S. consumers considered same-day delivery an important improvement to online retail.