In Europe, China, Australia, etc. they are being widely used. Long distance trucks from the likes of Volvo are being sold as fast as they are being produced. The US is running a bit behind the rest of the world here.

Electrically propelled trucks are commercially available in every weight class, form factor, etc. that you can name. Companies selling those are doing brisk business and dealing with waiting lists for their products.

They are ready and good enough right now. I think the US (assuming you are basing your opinions on what's happening there) has some unique challenges of being a bit change and technology resistant. And of course it being a petro state is causing lots of misguided policy and incentives that are actively holding it back.

Yet