Can electric cars on the highway emulate plane-to-plane refueling?

Re:Can electric cars on the highway emulate plane-to-plane r... by leetcrew on Wednesday May 06, 2020 @12:51PM (#23093309)

by the time you've added enough protection (ie, extra mass and drag) to the towed battery, it seems like you would be pretty deep into diminishing returns. a large amount of the extra energy would be spent on moving the trailer itself.

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Re:Can electric cars on the highway emulate plane-to-plane r... by ianai on Wednesday May 06, 2020 @01:39PM (#23093962)

Not really. Yes batteries add lots of weight. But electric motors have lots of torque and are known to climb hills easily. Like how Tesla’s forthcoming truck can tow up to 14000 pounds. I’m not doing the calculus, but I suspect the power characteristics of electric motors more than make up for a towable battery.

Edit-here’s an article about a company doing this

https://electrek.co/2020/02/19/french-startup-proposes-batte...

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Re:Can electric cars on the highway emulate plane-to-plane r... by leetcrew on Wednesday May 06, 2020 @01:57PM (#23094209)

energy, not power. I'm sure the motors have enough torque to tow the battery, what I'm doubting is how efficiently that extra battery capacity gets converted to range.

as an aside, the cybertruck is (probably) pretty bad at towing. see this video for an interesting argument: https://www.youtube.com/watch?v=S4W-P5aCWJs

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Re:Can electric cars on the highway emulate plane-to-plane r... by renewiltord on Thursday May 07, 2020 @12:35AM (#23099767)

Very slow video. Wish it were transcripted.

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