Going wine tasting but will also be driving. how much wine can one drink w/o becoming drunk or even buzzed?

Depends on weight &: This depends on your weight, your metabolism and how sensitive you are to alcohol. Some people get buzzed from even a single drink while others have higher tolerance, but even a single drink will slightly impair driving ability. You might be able to tolerate 1 and a half glasses of wine per hour, but I advise no more than 1 per hour. See http://www.bodybuilding.com/fun/caldrunk.htm