BreweryMap, a Google Maps mashup and mobile app, provides two main functions. The first is that it tells you where the nearest brewery is so that you'll never go thirsty again. The second and far more important function is that you can punch in two addresses, and BreweryMap tells you all the breweries that are on the way from point A to point B.
Let your fantasy become a reality. Just make sure to spread out your trips.