Perez to start US GP from pit lane for FP2 weighbridge breach

You seriously overestimate the amount of cheating that happens, the last time a team intentionally ran an illegal car was BAR in 2005 with their auxiliary fuel tank. That's 14 years ago now, I don't even know what the last time before that is.

And if there was a reasonable way to gain an advantage from running an underweight car in free practice I'd agree but these cars are checked far more thoroughly every race weekend. With no realistic way of gaining an advantage I don't see the point in wrecking a drivers weekend over a silly error because the chance of cheating is so minuscule.

Make the driver take the car back to get weighed either during the session or after, maybe make sure to weigh that team's cars again in Q1 and Q2, scrap him from the session just in case the grid is based on that session and call it a day. It effectively catches any potential cheating without something as drastic as exclusion from qualifying over a missed sign.

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