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The article also says that Porsche owners crash more.

So I think this just shows a correlation between choice of car and type of person, which is not a new discovery...

The stat compares the crash rate per miles driven of drivers who have a Tesla and another car, finding a lower crash rate when the same person is driving the Tesla versus their other car (on average).

It still depends on who buys a Porsche, a Tesla, etc, and possibly what car they already have.

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