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
Shanghai International Circuit the following year by Scuderia Ferrari driver Sebastian Vettel, who completed one lap of the circuit in 1:31.095. Shanghai International Circuit The Shanghai International Circuit () is a motorsport race track, situated in the Jiading District, Shanghai. The circuit is best known as the venue for the annual Formula 1 Chinese Grand Prix which has been hosted since 2004. Shanghai International Circuit is a no-expense-spared facility, conceived by the Shanghai authorities as a way to showcase the city to the world. A 5.3 sq km site was chosen in the Jiading District in the north west of the city, close