Dallara Automobili is an Italian chassis manufacturer for various motor racing series, being most notable for its near-monopoly in Formula Three since 1993. Dallara also produces the chassis used by the IndyCar Series, Indy Lights, GP2 Series, World Series by Renault, GP3 Series and ADAC Formel Masters and is one of the manufacturers in the Grand-Am Rolex Sports Car Series. In recent years the engineering activities have expanded considerably (now represents 40% of total sales), both in terms of the racing cars and high performance road cars.