It began as an exciting trip. Every year, the elderly couple Lela, 83, and Raymond Howard, 88, took a drive out from their home in from Salado, Texas, to go to a music festival in the nearby town of Temple. It wasn’t a long way, just about 15 miles, so when Lela’s son begged to let him drive them, they refused, instead opting to take the trip just the two of them as they always had. Although Lela’s son, Hal Copeland, was concerned due to Lela’s signs of early Alzheimer’s disease, as well as the fact that Raymond had suffered...