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Wait until they use the driver-facing cameras to (try to) detect cannabis intoxication and the cameras think everyone with squinting eyes is intoxicated.

I remember seeing a TV news segment a long time ago about how juices caused false positives.

Here are more examples:

https://www.columbusdefensefirm.com/causes-false-positive-br...

Certain breads too. Lots of things.

That reminds me of Auto Brewery Syndrome:

https://www.palmpartners.com/auto-brewery-syndrome-body-prod...

It's interesting that those that are diagnosed don't have driving restrictions like people with epilepsy since they are actually intoxicated by it, but that might just be because it's so rare that most people don't know or refuse to believe it exists. They'll have it the worst if this actually gets mandated and deployed.