as a chassis supplier at the IndyCar Series in 1997, and has been the single chassis supplier since 2007. The manufacturer has won seventeen of the twenty Indianapolis 500s they have contested. In 2013, Dallara reached its milestone 200th Indy car victory at Barber. In 2012 the company opened an engineering center in Speedway, Indiana, at the Speed Zone Redevelopment Area near the Indianapolis Motor Speedway, where they produce and assemble the IndyCar. The same building also houses an entertainment center, where visitors can learn how a racing car is manufactured. First generation (IR-7) Dallara was one of the original three chassis constructors when the Indy Racing League debuted its own chassis formula during the 1997 season. The first model year (1997) was named the IR-7. The cars were most notably differentiated from the competing G-Force chassis by the ovoid shape of the air intake inlet, while the G-Force's were triangular and molded around the roll bar. The IR-8 (1998) and IR-9 (1999) were essentially 1997 model year chassis with various update kits. Jim Guthrie won Dallara's first Indy car race at Phoenix on 23 March 1997. Eddie Cheever won Dallara's first Indianapolis 500 in 1998, in his Oldsmobile-powered IR-7 chassis. Second generation (IR-00) A new model chassis was introduced for the 2000 season; named the IR-00. When updated for 2001 the chassis was designated as the IR-01 and for 2002 it was referred to as the IR-02. Third generation (IR-03/IR-05) For the 2003 season, Dallara rolled out the new IR-03 chassis. This chassis would later become the de facto "spec-car" in the series. An aerodynamic update kit was released for 2007, which changed its designation to IR-05. In addition, paddle-shifters began seeing use in 2008, further developing and evolving this generation of Dallaras. Chassis bearing both the IR-03 and the IR-05 designations saw use through the end of the 2011 season. For the 2006 season, over 80% of the field began the season with a Dallara, a possible symptom of Panoz's (manufacturer of the G-Force chassis) perceived lack of interest. This was around the time Panoz began delivering the DP01 chassis to the rival Champ Car series. From 2007 to 2011 all IndyCar teams used the IR-05 chassis, although a few teams entered a Panoz/G-Force chassis into the 2007 Indianapolis 500 singly. Some smaller teams continued to utilize the slightly older IR-03 designated chassis, particularly at Indianapolis, with update