Rahal Letterman Lanigan Racing Pre-Race Notes Season-Finale of the 2017 Verizon IndyCar Series NEWS & NOTES: DATE:                                      September 15-17, 2017 SPECIAL PROGRAMMING:       Graham Rahal will be the featured driver on “INDYCAR: Next,” a 30-minute special that will air on NBCSN Friday, September 15 at 8 p.m. ET.  PRACTICE BROADCASTS:       Live on NBCSN on Friday, September 15 from 5:00-6:30…