Rahal Letterman Lanigan Racing Grand Prix of Sonoma – Sonoma Raceway – Pre-Race Notes Season-Finale of the 2018 Verizon IndyCar Series NEWS & NOTES: DATE:                                      September 14-16, 2018 PRACTICE BROADCASTS:       Live on www.Indycar.com with analysis from the Advance Auto Parts INDYCAR Radio Network (AAPIRN) and on the INDYCAR YouTube channel (www.youtube.com/indycar) on Friday beginning at 2 p.m. and 6 p.m….