EV trucks are perfectly doable for the last mile with current battery tech. You dont need a big battery for that.
This is not accurate at all. For posterity (and forgive me if this sounds condescending) “last mile” doesn’t literally mean last mile. It refers to taking cargo from a backbone transport route (ports and railway depots). This last mile is often hundreds of miles.
Trucking margins are slim, and to stay in the black, trucks need to be on the road most of the time. The larger companies have their trucks in motion near 24x7, while the independent drivers stop when law dictates for sleep (but often skirt these laws). Trucks which require frequent charging would be much less efficient. They would be more expensive than ICE trucks. This is why we have so few EV trucks on the road. Because today, they are not yet viable for most last mile transport.
Trams have the same limitations of railways: high capex and inflexibility. Rails and trams can’t be economically built to every town and front door.