But not as much as it would seem, since road damage is a quadratic function of weight and one truck does as much damage as 9600 1 ton cars. Doubling the weight

But not as much as it would seem, since road damage is a quadratic function of weight and one truck does as much damage as 9600 1 ton cars. Doubling the weight of the car would maybe narrow that by a few percentage points, but vehicle miles for any personal vehicle at essentially any weight is a rounding error compared to one truck.