Twenty-car pile-up of ideas in my head

I’m not sure how or when I’ll use this in a story, but I am fascinated by the idea of slugging, a term used to describe a unique form of commuting found in Washington, DC, San Francisco, and Pittsburg and sometimes referred to as "Instant Carpooling" or "Casual Carpooling". It is the practice of forming ad hoc, informal, temporary carpools for purposes of commuting, essentially a variation of ride-share commuting and hitchhiking.

“The system of slugging is quite simple. A car needing additional