Roads are designed for a certain amount of "axle weight" [1] which basically means to carry a heavier load you need to add more axles to distribute the load. I

Roads are designed for a certain amount of "axle weight" [1] which basically means to carry a heavier load you need to add more axles to distribute the load. I would guess electric cars are still negligible in that metric, though. [1] https://en.wikipedia.org/wiki/Gross_axle_weight_rating https://en.wikipedia.org/wiki/Gross_axle_weight_rating