Complete the following sentence: The 1992 PPG Indy Car World Series season was the 14th national championship season of American open wheel racing sanctioned by CART (d.b.a "IndyCar"). ️<unk>️<unk>️<unk> Bobby Rahal was the national champion, his third and final career CART title.<unk>Bobby Rahal was the national champion, his third and final career CART title.<unk> Stefan Johansson was named the Rookie of the Year.<unk> Stefan Johansson was named the Rookie of the Year. <unk> <unk> <unk>
1992 Indianapolis 500 was sanctioned by USAC, but counted towards the CART points championship.<unk> 1992 Indianapolis 500 was sanctioned by USAC, but counted towards the CART points championship. Al Unser Jr. won the Indy 500 in the closest finish in the history of that event.