INDIANAPOLIS (AP) — Few drivers have experienced a bigger boost from winning the Indianapolis 500 than Marcus Ericsson, who has truly turned last year's victory into a life-changing event. Not only did it resurrect the Swede's career, which had stalled after five seasons in Formula One, it also made Ericsson a bona fide superstar in both his native country and adopted hometown of Indianapolis. But as Ericsson attempts to become the first back-to-back winner of the Indy 500 since Helio Castroneves 21 years ago, he does so without a contract in place for next year.