Overview:Richard Hammond gets behind the wheel of the mid-engined Alfa Romeo 4C on the shores of Lake Como in Italy - but his enjoyment of the lightweight vehicle is disturbed by the arrival of Jeremy Clarkson, who demands a race against his quad bike. Jeremy also visits Belgium, putting the McLaren P1 hypercar to the test in Bruges and around the Spa-Francorchamps Formula One circuit - and its combined power output of more than 900bhp generated from electricity and turbocharged petrol V8 power is likely to cause astonishment. Meanwhile, James May spends time at Camp Bastion in Afghanistan to learn about the army's vehicle redeployment efforts, and Thor star Tom Hiddleston tries to coax the best time he can muster from the Reasonably Priced Car.