I've heard so many stories about bandits in the city that my son and I are now considering driving straight through Naples and not stopping to sightsee. Unfortunately, the stories you've heard are based in truth. Naples simply isn't worth your time. You should be equally alert behind the wheel.
Drivers are, in a word, aggressive.
They ignore lane dividers and traffic lights, and scooters routinely buzz between cars at top speed. Only New York City taxi drivers would feel at home behind the wheel. Having said that, a driving tour of Italy is an unforgettable experience. There's no better way to see the countryside and visit villages at your leisure. Most roads, including many stretches of the autostrada , or the Italian highway, aren't lit, so it can be quite difficult to see.