Aston Martin Launches new Vantage GT4 RacerAston Martin's Racing division has revealed the 2009 specification Vantage GT4 race car that's based on the firm's latest 4.7-liter V8 Vantage model. Set to replace the outgoing 4.3-liter Vantage N24, Aston Martin's new competition car has been built to FIA GT4 regulations and it targets professional and semi-professional drivers but also enthusiasts who