I drove 1800 miles in a Hydrogen Car

Hi Dianna (Physics girl),
I watch many of your episodes and I must say that I enjoy them very much. They are simple to understand, interesting and I share much of the content with my kids.
I want to ask about the true justifications of using BEV over a regular conventional petroleum vehicle though.
See, generating the energy to allow you driving your BEV vehicle may generate as much pollution to the environment as a conventional vehicle. Charging a battery may consume huge amount of bursing energy and in a very short time. Generating that amount of energy - if a country doesn't have any nuclear reactor for generating electricity - may polute the air at the same level as a conventional engine though the pollution will concentrate in reduced and specific areas.
My point is that as long as countries are using conventional ways to produce electricity, they should stick with conventional vehicles.
What do you think?