i have a sister that was driving in wyoming where her car broke down, they got it to a shop and the bill was something like 280 to fix. After a short time of dismay two people walked in, a young man and his dad. They walked over to her and handed her something and said "god told us somebody was in need of money and where to go." they had handed her 280 bucks and walked out.
it took a few days for it to hit her, but she was in tears over what just happend..

karma is a great thing.. always pay it forward