It seems to us like Aston Martin never tires of rolling out ever hotter renditions of its Vantage sports coupe. As if the original V8 Vantage weren't enticing enough, Aston then shoehorned a V12 under the hood. Zagato then rebodied what we already thought was one of the shapeliest beasts on the market. And the improvements just keep on rumbling in. But then there's the racing versions. Oh, the racing versions!