Can a once-hip wine region be cool again?

California’s Carneros region may have been overshadowed by other appellations, but a small group of vineyard owners and vintners are looking to restore youth and excitement. One time, not so long ago, the most famous and sought-after place to grow Chardonnay and Pinot Noir in California was Carneros. The region, which lies partly in Napa and partly in Sonoma, showed so much promise that big-name sparkling-wine producers from France and Spain opened Carneros outposts. Today, the former hot spot has been overshadowed by newer, cooler appellations.