I had to have "the driving talk" with my mom several years ago after consulting with a few of my siblings. I was steeled for a rough conversation but Mom surprised me again saying she knew she wasn't what she once was behind the wheel and she couldn't live with herself if someone got hurt due to her degrading skills. It was still tough for her.
I know it will be tough for me someday. I love to drive. Once I took a trip with my young daughter to Dallas to visit my brother. I drove back straight through only stopping for gas and restroom breaks. Another time we took a family spring break trip through IA, NE, CO, UT, AZ, TX, OK, KS and MO. Mrs. Velo kept asking if I needed her to drive but I drove every mile of the trip and didn't want to give up the driver's seat. Hoping our next trip is a drive up to visit my brother in Anchorage.