These girls' cars broke down, which is a stroke of luck to Dane and the rest of the guys. They capitalize with kindness, and offer the use of their phone or other services which eventually leads them (and the girl) back to their house.
After a few moments of idle chatter, the girls actually push the guys into a one-night stand with them (or one day stand). Incredible! Who knew that atmosphere, kindness, and a bit of conversation could land such a great lay?