A half-century after MLK's death is Baltimore less segregated? Yes and no.

Mario Andretti

IndyCar looking for star power

IndyCar looking for star power

You can't say IndyCar lacks for stories.

There's Helio Castroneves, the photogenic Brazilian driver who won "Dancing With the Stars" and currently leads in his quest for a first season championship.

There's his countryman, Tony Kanaan, an affable veteran who brought tears to the eyes of many racing lovers when he finally won the Indianapolis 500 this year.

Yet IndyCar faces a vexing question as drivers prepare for Sunday's third Grand Prix of Baltimore. Why aren't Castroneves, Kanaan and their peers perceived as national stars on par with their NASCAR counterparts or past greats such as Mario Andretti and A.J. Foyt?

IndyCar, the premiere open-wheel series...