she returned to the children's hospital bearing gifts. 300 donated lego sets for friends, old and new. i want to make them happy. >> it's hopeful and inspiring and makes you feel really good about the future. >> the gift of hope, the gift of love, and a gift of compassion. >> her mother says the kindness ofer people helped her daughter heal. and they wanted to pay it forward. amazing story. you see that turning into a movie, couldn't you? >> the 6-year-old with a big heart. that's the holiday spirit. tesla's rival brought in the biggest yet. cnn has the details next. 40 hou.