[MacsHeadroom]

You're just plain wrong.

15 minutes is 75 confirmations.

The Ethereum network has never deviated by more than 2 confirmations (24 seconds) and with PoS this is even less likely to happen.

Finally, the likelihood of that happening AND a car buyer colluding with block producers to scam you is effectively zero.

You're FAR more likely to be struck by lightning in the 15 seconds it takes the driver to leave than you are to have their transaction reversed on the Eth2 blockchain.

[kosolam]

Please look here for yourself: https://beaconcha.in/

[kosolam]

Indeed, around 60-70 confirms and then you can give him the car knowing tx won’t reverse