Understood. I felt awe for my mom that in spite of the dementia, she was careful with dangerous things and even stopped driving without us taking the car away. Driving is one of the moments where things erupt because elders love their independence!
Driving was an issue with my m-i-l.
She would NOT give it up until they did a test for her response time and told her she HAD to.
Even then we had to hide her keys.