SEBASTIEN BOURDAIS SCORES DRAMATIC WIN IN SEASON OPENGING FIRESTONE GRAND PRIX  Sebastien Bourdais Race Summary: In one of the most dramatic victories in his illustrious career Sebastien Bourdais drove the No. 18 Team SealMaster – Dale Coyne Racing wit Vasser-Sullivan Honda/Dallara/Firestone car to victory today in the 2018 Verizon IndyCar Series season opening Firestone Grand…