Circuit de Monaco downhill again to a double right-hander called "Portier," named after region of Monaco, before heading into the famous tunnel, a unique feature of a Formula One circuit. (Until 2009 only one other circuit, Detroit in 1982–88, featured a tunnel, but the F1 series now includes racing at the Yas Marina Circuit in Abu Dhabi, which presents a shorter tunnel at the exit of the pit lane.) As well as the change of light making visibility poor, a car can lose 20–30% of its downforce due to the unique aerodynamic properties of the tunnel. The tunnel also presents a unique problem
Thruxton Circuit Thruxton Circuit Thruxton Motorsport Centre is a motor-racing circuit located near the village of Thruxton in Hampshire, England which hosts motorsport events including British Touring Cars and Formula 3 racing. It is often referred to as the "Fastest Circuit in the UK" where drivers can reach speeds of over 300kph and has earnt the reputation of being a true driver's track. To illustrate this, Damon Hill drove his Williams Formula One car around the circuit at an average speed of 147mph in 1993. The site also houses the headquarters of the British Automobile Racing Club (BARC). The site was originally