DETROIT -- A Detroit woman is thanking technology for her children's safe return after they were kidnapped during a carjacking over the weekend.

Artemis Patterson was loading her four children into her Chevy Tahoe Saturday after daycare when a stranger jumped inside and drove off with her children inside.

"I tried to grab the back of the truck and started screaming. I have never been through anything like this," Patterson said. "They were gone and I couldn't help them."

She called police and said officers were able to track her Tahoe down through the Global Positioning System on her On Star she had purchased two days before.

Officers found the vehicle and Travis Hatcher, 25, inside.

"Every minuted felt like an eternity," Patterson said.

The children were not harmed.

Hatcher has been charged with four counts of kidnapping and one count of carjacking.