Steak ‘n Shake, the American brand and home of the original Steakburger and hand-dipped milkshakes, has expanded its role with Graham Rahal’s No. 15 Honda to include primary sponsorship at the final two Verizon IndyCar Series races of the season.

Rahal is currently second in series standings, only nine points out of first place with two races to go.

Steak ‘n Shake was the primary sponsor of the No. 15 entry for six races this season, which included Long Beach, two events at Indianapolis Motor Speedway and Detroit, and Mid-Ohio. Maxim Magazine branding will continue to be prominently featured on the race car. Both are owned by Biglari Holdings Inc. In addition, Steak ‘n Shake and Maxim have been associate sponsors all season.

“The excitement and support of Steak ‘n Shake’s involvement with the team and Indy car racing has exceeded my wildest expectations,” added Bobby Rahal, co-owner of Rahal Letterman Lanigan Racing. “I said when we first announced the partnership that it was our goal to put them in Victory Lane and we have been able to do that two times this season and finish on the podium a series-high six times overall so far. I’m very happy they have extended their relationship with us to include primary sponsorship at Pocono and Sonoma where we hope to bring them more success and hopefully a championship.”