BROWNSBURG, Ind. (September 10, 2018) – Rahal Letterman Lanigan Racing (RLL) and Total Specialties USA, Inc., Total S.A.’s U.S. marketing affiliate, have expanded their relationship to include primary sponsorship of the team’s No. 15 entry for Graham Rahal in the IndyCar Series season-finale at Sonoma Raceway on September 16.  In January it was announced that the…