In Minnesota last week, an ice cream store was witness to a two-and-a-half day chain of kindness. It started with one man paying for the order of the car behind him at the drive-through window. When the next customer arrived at the window, store manager Tina Jensen explained that their order was already paid for by the car ahead of them. Jensen had told the cashier that this happens once in a while but tends to fizzle out after 15-20 cars. To everyone's awe, the pay-it-forward chain continued through 900 carfuls of customers over two days, representing a total of $10,000 in sales. When the the store closed for the night on December 3, one car left $10 to begin the chain back up the next morning. "During times like these it kind of restores your faith in humanity a little," Heidi Bruse, one of the 900 customers, told CNN. "The way the world is now, you see a lot of anger, tensions and selfish behavior. What we witnessed was pure kindness, and it was a breath of fresh air, really." For Bruse, the most touching part was receiving the intention of care and telling her family about what happened: "Not that we got free ice cream. The gesture was way more valuable."