Because right now we don’t have that much excess energy… Therefore it’s just a waste of energy to use it, because it is way less efficient. AND on top of it an hydrogen car also needs a battery just a smaller one. So it has all the downsides without any upsides. The only upside is that you can recharge your car faster and it has some more range. But both those things don’t matter for the average consumer

I hope you also don’t drive a car since it’s just for your convenience and kills people

It’s not the worst, but certainly not a pleasant experience at least in summer or winter. In summer your face gets all sweaty and disgusting and in winter I get a runny nose and the mask gets disgusting. If it’s not really necessary I’d rather don’t wear it.