The cost isn’t what they are demonstrating here. It’s the feasibility of the tech. Electric cars had to pass the feasibility test before anyone was going to pay the high new tech prices. I think Tesla’s were 100k to begin with? The range was about the same or less than a gas car but I can’t imagine it being successful if it only had a 150mile range.

Once people think the tech is good enough they will hoping the price comes down so everyone can use it not just rich people