Regarding the OP about heavier vehicles damaging roads, and the debate about EVs, here's a possible solution. Fit them with air suspension. Due to the way it works, it causes less wear and tear. This would help preserve the roads and save money on repairs. Obviously the effects would be gradual but every bit helps, as they say.
The reason I suggested this is because of the comment about trucks causing the most damage. True, but heavy goods vehicles that have road-friendly suspension (RFS), which is most air suspension systems, actually pay a reduced rate of vehicle excise duty because they cause less damage to the roads. So it's acknowledged by the authorities that air suspension causes less wear and tear to roads. So fitting air suspension to EVs, and heavier vehicles in general, would cause less damage.
Some cars already have it so presumably, apart from a comfier ride, they are better for the roads.