Chaves returned to the U.S. .
Chaves finished second in Star Mazda in 2012 , second in Indy Lights in 2013 and clinched this year 's Indy Lights title at Sonoma Raceway .
Returning to the U.S. , Chaves finished second in Star Mazda in 2012 , second in Indy Lights in 2013 and clinched this year 's Indy Lights title at Sonoma Raceway .