My dad is 98 and he started dating an 82-year-old. It seems to be going really well. She can't drive and he still does so that probably increased his appeal.

Is he still mentally fit to drive at 98? Damn that's impressive. You've got some good genes.

of course not. doesnt stop old people though

Generalizations like this are useless. Obviously there are exceptions. There certainly are people who retain a sharp mind into old age and even past age 100. It's not that uncommon. If he also kept his body in good shape, it's *easy* to believe he can still drive as well as anyone half his age.