IndyCar has seen almost 1,000 on-track passes after four races of the 2018 season, a 110 percent increase on last year, according to figures released by the series. One of the new aerokit’s primary goals was to improve racing by increasing the downforce generated by the underside of the Dallara IR12 chassis, and reducing the number of aerodynamic appendages on top surfaces to allow cars to run closer.  IndyCar has since raced on two street courses, one short oval and one road course, and after the last round at Barber Motorsports Park, the series claims it has seen 999 passes for position on the track – although IndyCar includes first lap moves and cars being lapped and unlapped. ...
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