The six people killed when a driver lost control of his high-powered Audi S3 and crashed head-on into a taxi were aged between 25 and 43, police have revealed. <br /><br />A seventh man, aged 22, remains in a critical condition in hospital. <br /><br />Taxi driver Imtiaz Mohammed, 33, was killed instantly when the Audi mounted the central reservation of an underpass and landed on the wrong side of the dual carriageway.