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[–]magnora7[S] 1 insightful - 2 fun1 insightful - 1 fun2 insightful - 2 fun -  (1 child)

I think they do the whole race on one charge now. And also I think they have ways to swap out the batteries for faster refuels? I don't know

[–]Tom_Bombadil 2 insightful - 1 fun2 insightful - 0 fun3 insightful - 1 fun -  (0 children)

I don't know about the rallys.

Tesla envisions mobile EV battery swapping machines 9/17/17

In theory it's a good idea, but there are too many safety risks. Any contamination on the terminals/contacts from will instantly start a fire (at those amperages), so each swap is a significant safety risk.

Then there's the technical challenge of reliably securing the battery with a reasonably quick exchange.

Then there's the issue of customers recovering their original battery, and the scammers, and complainers, etc.

Plenty of technical and social obstacles to overcome/manage. I doubt they'll ever commercialize it on any significant scale.