East Bay travelers often treat Napa and Sonoma as “close enough to drive”—until the second tasting. Sonoma wine tour transportation with a private driver flips the day: the itinerary stays ambitious, and the group stays intact. Tri-City Rideshare LLC, operating from Union City, offers private winery tours to Napa Valley, Sonoma, and other popular wine destinations for individuals, families, and groups, with vehicles matched to party size.

Start with the constraint that matters: who is driving?