The Honda-powered car was driven by Chip Ganassi Racing’s six-time IndyCar champion, Scott Dixon, while Team Penske’s two-time champion Josef Newgarden drove the Chevrolet machine.
Chevrolet driving duties are expected to be taken over by Will Power as testing continues on Tuesday.
Monday’s test was conducted on a 13-turn 2.6-mile version of the road course that incorporates the Speedway’s Turn 1 onto the front straight, in order to reduce any advantage that could have been garnered by either team involved.
Neither engine was fitted with the Mahle-built hybrid unit, which will be part of the specifications when the new 2.4-litre engines are introduced in 2024.
They instead ran alternators from the current-spec 2.2-litre V6 twin-turbo engines, which have been used in IndyCar since 2012.
Difficult cold track conditions minimised running early on in the day, but matters improved in the afternoon.
GM’s IndyCar program manager Rob Buckner confined his comments to, “We were…
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