My wife thinks I drive too fast. Our younger daughter thinks I drive too slow. Since I am neither a white-knuckled NASCAR wannabe nor a little old man who tootles along in the passing lane with his left blinker on, this means I drive just right. And I recently proved it by getting an A in an AARP Smart Driver Course. I took the six-hour online class for one of the following reasons: (a) To prove my wife and daughter wrong. (b) To be a safe driver. (c) To get a discount on my auto insurance. If you guessed (c), you would be correct, although the first two were factors as well. I was correct on …