Moto gp racing Stars of the rolling thunder show rode their race bikes through the heart of wine country to give locals a glimpse of what was going on at Calistoga Speedway.\rbr\rbrAfter a two year absence from Calistoga Speedway, the stars of AMA Pro Flat Track return to Napa Valley for the Ramspur Winery Calistoga Half-Mile presented .\rbr\rbrAfter a two year hiatus, the Ramspur Winery Calistoga Half-Mile presented by Victory Chevrolet did not disappoint with wheel-to-wheel racing, featuring some of .