NASHVILLE, TN - The NTT INDYCAR SERIES returns to the streets (and bridge!) of Nashville this weekend for the third edition of the Big Machine Music City Grand Prix. INDY NXT by Firestone will also be part of this weekend’s event. Firestone Racing provides a real-time tire tracker at livetiming.net/firestone for qualifying, including Firestone Fast Six, at street and road courses races for the NTT INDYCAR SERIES. Teams must use one set of primary a ...