I would be willing to bet most were seniors headed to the casinos for a day of fun. So sad.
These trips originate in Las Vegas. I was on that road a couple years ago. A great road but it is curvy. My wife and daughters were imploring me to slow down.
Yes, these casino junkets are popular with seniors. The buses from Chicago to the Indiana casinos are also very popular with Asians, with pickup spots in both Chinatown and Little Vietnam. They make the trip several times a week, with multiple trips leaving each day.