Uninformed new owners upon taking delivery of their C8 might stare at the tachometer for a few seconds when they first start the car. They might also utter a few expletives as they see a 4,500 redline on that tach. This is, of course, the rev limit for the first 500 miles. At the end of the first 500 miles, the Tach is AUTOMATIC adjusted to the normal 6,500 readline during the 501st mile....and here's a vid to prove it:
The driver of a mid-engined Chevrolet Corvette filmed the car's digital instrument cluster to show how the tachometer changes after the break-in period.