Here is a parenting parable for our age. Carla Wagner, 17, of Coral Gables, Fla., spent the afternoon drinking the tequila she charged on her American Express Gold Card before speeding off in her high-performance Audi A4. She was dialing her cell phone when she ran over Helen Marie Witty, a 16-year-old honor student who was out Rollerblading. Charged with drunken driving and manslaughter, Carla was given a trial date--at which point her parents asked the judge whether it would be O.K. if Carla went ahead and spent the summer in Paris, as she usually does.
That settled it, as far...