We wanted to find lesser known wineries while visiting Napa Valley, yet we didn't want to have to worry about driving after tasting all that wine. The trolley tour was perfect. Their itinerary changes frequently, so you never know which wineries you'll visit, they provide a lovely lunch and the camaraderie with other passengers is a lot of fun. Our driver and guide, Epaul, was excellent - so informative, entertaining, extremely organized and a real nice guy. Be aware that you'll pay your own tasting fees, but most places give trolley riders a discount.