Speak for yourself about age and reflexes as far as driving goes.Another thought.
It really comes down to what HP you're comfortable with controlling/driving. Betty made a good point about age. No secret that reflexes slow down as you approach the back nine. If you can't control the acceleration of a car its not much fun to drive it.
At this point, I can still control the acceleration/speed of my R/T which makes it a pleasure and fun to drive. I still get a rush when I floor it and floor it safely to enjoy. Any more and it would defeat the purpose for me, especially living in the most populated state per capita in the US.