NTT Indy Car Series’ decision to change fuel suppliers from Sunoco to Speedway raised eyebrows.  After all, fuel is the lifeblood of an Indy car. But the new supplier’s parent company, oil giant Marathon Petroleum, knows the Indy E85 mix well, and the transition seems to have been seamless. Speedway, the 4000- store convenience and gas chain owned by Marathon, is happy with the positive profile it gives them. Read more ….