Last week, a 72-year-old New Canaan man faced vehicular manslaughter charges for allegedly striking and killing a motorcyclist last fall. In Darien, an 89-year-old man turned himself in after allegedly hitting and severely injuring 15-year-old pedestrian on Hoyt Street. He claimed he didn't know he hit anything until he saw the accident reported in the paper the next day. And on Friday an 85-year-old man sustained minor injuries after rolling his car over on West Avenue in Darien. For years, lawmakers, senior advocates and the children of elderly parents have debated the need for retesting older drivers. Now that seniors...