With regards to road vehicles, I was involved in a project with Volvo trucks where we were trying to improve the environmental performance of our fleet and part of that process was considering all potential fuel sources. One thing became very obvious quite quickly with regards to electrically powered vehicles; up to 3.5t gvw, providing the infrastructure was available to support it, battery power was achievable. Anything greater than 3.5t gvw, the weight of the batteries required to move it, would take practically all of the available payload. The end-result was that for commercial use, bi-fuel engines are pretty much the way this is going to go for the foreseeable future and would appear to be confirmed by the latest Volvo announcement (albeit this is for their cars, which are no longer owned by AB Volvo).
Having moved on and now involved in the world-wide recall of failed Li-Ion batteries, the latest news is that Lithium is on its way out, to be replaced by Sodium-Ion.