The Reason Why Are Trucks Getting Bigger

So electric trucks should become smaller, right?

Yes, and that's why we have a tiny Hummer and a tiny Cybertruck

They'll go with the grain for now. It's easier to sell people on "this truck is electric, but otherwise the same" than on "this truck is electric and smaller, but all you need".

Once the majority of trucks is electric they'll have an easier time finding their own identity, which likely includes getting smaller.

A Nash equilibrium is not so easy to break.

Bigger frame allows for bigger battery. Those huge trucks should have not been built, but once they are here and the people like them - probably as a class of car they are here to stay.

It is fun to see Toyota tundra in the middle of small European town - the streets are like upholstery to the trucks.

You have to really think how CAFE works.

There is incentive to make small efficient vehicles, but also to make large efficient vehicles. Both will allow more large inefficient vehicles to be sold.