We have seen it happen so many times in Fort Lauderdale: a car is driven erratically and the driver is pulled over. After a search, the driver finds himself in custody on drug charges. We read recently of this very same scenario playing out south of us in the Lower Keys. That is where a 52-year-old driver was observed by a police officer to be swerving his vehicle on a highway at about 3 in the morning. The man's pick-up crossed the center line 8 times before the police car's lights went on.