The 108th running of the Indianapolis 500 on Sunday will be the sixth broadcast by NBC, the network that took over the rights after ABC’s 54-year run of showcasing “The Greatest Spectacle in Racing.” Whether NBC, whose contract expires after this season, will continue as the exclusive home of the IndyCar Series and the Indy 500 is currently unclear.

NBC and Fox remain the two main suitors for the media rights, which, like the Indianapolis Motor Speedway, are part of Roger Penske’s business empire. It’s expected that over the next month, IndyCar will announce a new media deal—and, while a rights-fee bump is anticipated, money won’t be the only major factor.

“The financial side is a piece of it,” a source with knowledge of IndyCar’s negotiations tells Front Office Sports. “But the second piece really is who can guarantee the most exposure?