Volkswagen's popular ad in the 1990s introduced non-German speakers to the term Fahrvergnügen -- the pleasure of driving. For many smokers, that pleasure is incomplete without a cigarette or two … or more. Driving can be stressful and boring -- both triggers by themselves. It can also be social, another trigger. If you know that your car is a favorite smoke spot, the first thing to do is clean the interior thoroughly. You'll be much less likely to smoke in a car that isn't triggering your nose as soon as you sit down. Besides vacuuming and dusting, though, be aware that for the smell to really dissipate, you'll need to get nitty-gritty with detailing. If you can afford to, you can have it professionally done.