Aston Martin has unveiled its new Valiant sports car, designed in partnership with Spanish racing driver and two-time world champion, Fernando Alonso. The cars, of which there are only 38 in the world, are thought to cost around £2 million per unit (€2.37 million), excluding tax in the UK. Aston Martin has confirmed that all of the cars have already been pre-sold, and that deliveries will begin in the fourth quarter of this year. This will follow the public presentation of the car at the Goodwood Festival of Speed in July. Fernando Alonso, who is currently competing for Aston Martin in Formula…