INDY 500: Marco Andretti honors Mario with tribute helmet

Marco Andretti has taken a page from his grandfather Mario Andretti's 1969 Indy 500-winning helmet livery (left) for the this year's historic 100th running of the great race.

"It's the 100th and obviously I wanted to celebrate [Mario's] 1969 helmet," Andretti told RACER. "We painted it to look like a half-face helmet."

Here’s a closer look at Marco’s custom Bell helmet: