The high price of filling a car's tank was one less worry for a few lucky people last weekend.

That's because the people behind YouTube channel Give Back Films decided to buy gas for random motorists.

The people are surprised and taken aback, with one man even delving into a moving story about how he lost one child, only to be blessed with another one later. It's the latest tale of a stranger paying it forward and more proof that there's plenty of good to be had if you just do your part, no matter how small it may be.