I'm betting for anything bigger than a family vehicle to end up being hydrogen just cause the recharge times, weight restrictions, and other factors such as costs
[Edit] Correcting myself, looks like Komatsu/Proterra are working on a bigger EV excavator. [1] I hope this becomes affordable because the noise reduction of electric would surely make my neighbors happy and I would love to not breath diesel exhaust.
[1] - https://www.proterra.com/press-release/komatsu-electric-cons...
We'll probably upgrade the charger to higher speed (Ionity already support 250+Kw) but what's the point?
As for the weight, do you know a Model 3 weight roughly as much as the BMW Series 3 (closest competitor)? https://carbuzz.com/compare/bmw-3-series-vs-tesla-model-3#ca...
It's cheaper, too: https://insideevs.com/features/517960/tesla-model3-bmw-3seri...