Audi Le Mans winner Allan McNish puts the new Audi S4 through its paces at Thruxton racing circuit.<br /><br /><br /><img src="http://ll.broadbandsports.com/images/38256_thumb.jpg" alt="Audi S4 Test Drive" title="Audi S4 Test Drive" width="150" height="90" alt="Audi S4 Test Drive"/>
