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A comment on Towing a Tesla at 70 MPH replenishes battery at fast charger rates. Parent comment

Re:Towing a Tesla at 70 MPH replenishes battery at fast char... by hardwaregeek on Monday June 21, 2021 @08:45PM (#27586600)
Energy Vault is a startup that stores energy using big concrete blocks. Pretty close to your idea: https://en.wikipedia.org/wiki/Energy_Vault
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