Beijin had a traffic jam that stretches 62 miles and lasted 9 days. Just imagine getting yourself caught in that! "The state-run newspaper said the jam between Beijing and Jining city had given birth to a mini-economy with local merchants capitalising on the stranded drivers' predicament by selling them water and food at inflated prices." http://news.yahoo.com/s/afp/20100823/sc_afp/chinaroadtraffic
Holy shit, I was stuck in a jam on PA I80 for 14 hrs once. I thought I had it bad this destroys that.
You win, I think the longest I was stuck was 8-10 hours because of random miraculous snow in the High Desert in California. I just started reading, listening to music, and I think I even took a nap. I didn't have a phone at the time and no one was prepared for snow in California so most people ended up staying in their cars and not socializing. I love the cold so I went out for a bit and enjoyed the beautiful scenery.