The IndyCar league has debuted a small but important new feature to its race cars that’s designed to improve viewers’ experience: LED number panels. They’re placed on each side of a car, just behind the driver’s head, and display that vehicle’s race position in real-time. The panels debuted over the weekend at an Ohio race, and are designed to let both viewers at home and at the race keep track of the blazing fast activities rushing past them.
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https://www.slashgear.com/indycar-begins-using-led-panels-to-show-race-positions-03395327/
