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You're going to need an actual maintenance infrastructure which is currently lacking. You're also going to need to improve the roads themselves due to the additional weight of the vehicles. You need a massive rollout of charging stations.

If it were only the lack of nuclear plants.

You can't just wave your hands about the climate and then hope to create a new market overnight.

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Passenger vehicle weight is basically irrelevant. Damage is proportional to the 4th power, so if your road can carry a much heavier vehicle, the passenger vehicle isn't really doing any damage.

Also the weight penalty is slowly decreasing as batteries get incrementally better.

Not all roads are created equally or have equal weight ratings. I'm sure you've seen signs depicting restrictions on certain roads. These smaller roads tend to be owned and maintained by smaller municipalities who are less able to afford upgrades or maintenance.

In any case, point still stands, you're more than "one smart decision" away from having electrified the American fleet of vehicles.

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