IndyCar: Early Silly Season Driver Lineup for 2018

INDIANAPOLIS, IN - MAY 28: Helio Castroneves of Brazil, driver of the #3 Shell Fuel Rewards Team Penske Chevrolet, leads a group of cars during the 101st Indianapolis 500 at Indianapolis Motorspeedway on May 28, 2017 in Indianapolis, Indiana. (Photo by Jared C. Tilton/Getty Images)
INDIANAPOLIS, IN - MAY 28: Helio Castroneves of Brazil, driver of the #3 Shell Fuel Rewards Team Penske Chevrolet, leads a group of cars during the 101st Indianapolis 500 at Indianapolis Motorspeedway on May 28, 2017 in Indianapolis, Indiana. (Photo by Jared C. Tilton/Getty Images)
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FORT WORTH, TX – JUNE 09: Graham Rahal, driver of the #15 Mi-Jack / Bobby Rahal Automotive Honda, practices for the Verizon IndyCar Series Rainguard Water Sealers 600 at Texas Motor Speedway on June 9, 2017 in Fort Worth, Texas. (Photo by Sarah Crabill/Getty Images)
FORT WORTH, TX – JUNE 09: Graham Rahal, driver of the #15 Mi-Jack / Bobby Rahal Automotive Honda, practices for the Verizon IndyCar Series Rainguard Water Sealers 600 at Texas Motor Speedway on June 9, 2017 in Fort Worth, Texas. (Photo by Sarah Crabill/Getty Images)

Rahal Letterman Lanigan Racing, Honda