After the power is 0, how many KM you can keep driving(Tesla model 85 as an example)?

After the power is 0, how many KM you can keep driving(Tesla model 85 as an example)?
Many new Tesla owners in China worries so much for the mileage range, Yesterday my Tesla the mileage shows 68KM, the destination supercharge is in 52KM,
i prepared to call rescue car, wow so luckily i am safe to the destination.
And one of my Tesla friend told me that, his Tesla run 20KM after his power is 0.
How about you? Who would be the boldest one?
Have you experienced 0 power while there is no supercharge station nearby?

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