![O'Ward on hybrid system:](https://cdn-9.motorsport.com/images/amp/2d19zpwY/s6/pato-o-ward-arrow-mclaren-chev.jpg)
The hybrid unit finally made its much-anticipated race weekend debut in opening practice at Mid-Ohio Sports Car Course, and although mixed conditions limited running it was still enough to recognize the differences for Pato O’Ward. IndyCar’s new era combines the current 2.2-liter twin-turbocharged V6 internal combustion engine with supercapacitor hybrid technology that features a low-voltage ...
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