[quote=Mastershake340} A number of vocations I don't see EV every being practical regardless of how far EV technology advances. For example fire trucks. They run out to emergencies where they might sit running and operating for hours with lights flashing, large volume pumps pumping, ladders being raised and lowered, how will a battery pack ever be able to work for that duty?[/quote]

Did you see this article about Vancouver, BC, putting an electric firetruck in service?

Electric Firetruck?

The claim it will work great, even though it needs a diesel "helper" engine, and doesn't pump as much water as a regular unit, and ONLY costs 20% more...