Its meant as absolutely no disrespect to your mother-in-law. To be capable of driving at that age is very impressive, indeed.
Its simple physiological fact though, that her reactions, reflexes, hearing, eyesight, etc ARE going to be less sharp than they once were. And however careful she is -...
Absolutely. Anyone commenting about knowing '90 year olds who are still great drivers' HAS to be kidding themselves, at least to some degree. I'm (only) 44 but already I can clearly identify the effects of the ageing process. Not in terms of ability to drive - but for example in my cricket - I...