Last weekend I was lucky enough to see my favourite rally car during a hillclimb race: the Audi Quattro S1. The car was developed in order to race in the Group B of the World Rally Championship. The car is moved by a fantastic turbocharged inline 5-cylinder engine which produce an unique melody. But, unfortunatly this one is just a replica of the original S1, but in my opinion is still beautiful to see. The driver is Roman Loinger.