Marcus Ericsson of Sweden poses with the Borg-Warner Trophy this past Monday during the traditional winner’s photo session at the Indianapolis Motor Speedway. Ericsson won the 106th running of the Indianapolis 500 auto race Sunday. (AP Photo/Michael Conroy)
By Jenna Fryer AP AUTO RACING WRITER INDIANAPOLIS (AP) — Marcus Ericsson, once a Formula One backmarker, is now an IndyCar frontrunner. And an Indianapolis…