Where is Everyone Going?

Whethere it is 2:00 in the afternoon or 4:00 in the morning people are always going somewhere. The other day, on a Monday, I had fallen asleep at a friends house. I had to get up and drive home at 3:45 in the morning (Tuesday). I could not believe the amount of people driving along side me and on the freeway. What are people really doing up that late and where could they possibly all be going? Nothing is open, flights don't leave that early, work doesn't usually go that late. I could understand seeing one or two cars but I probably saw more than fifty cars in a six block drive. Did they all fall asleep at their friends house?