Flagstaff Live:  “How stoned is too stoned to drive?  A recent decision by Arizona’s appellate court says it’s illegal for Flagstaff’s nearly 1,000 medical marijuana cardholders—and thousands of other recreational users—to drive their cars, even if they haven’t smoked in weeks. A 22-year-old Flagstaff father was on his way home from the grocery store earlier this year when he was stopped for having expired registration. His 2-year-old daughter was in the back seat, according to police. . . . He’d smoked marijuana six hours before driving, he told the officer.”