Hundreds of racing enthusiasts will gather this month in Monterey, Calif., for the Mazda Raceway Laguna Seca’s inaugural Aston Martin Festival. Over Labor Day weekend, August 29 to 31, the event will showcase the British marque’s current street and track models, including the all-new carbon-clad version of the Vanquish. It will also hold a concours of the brand’s best vintage cars, as well as the third round of the new Aston Martin GT4 Challenge of North America—a six-event series that allows amateur drivers t…