Thank you for sharing that is really tremendous, how fast the technology goes forward. Electric approaches are #1 for the sake of ecology, which is not straightforward in any case.
Every transportation technology, including aircraft and aerospace, needs to go experimenting. I would say you will never know pro’s and con’s until you try on numerous engine tests.
For advertisement purposes of car promotions I have made a research of the market for middle-class cars to expensive branded ones.
My purpose was to find out how super-expensive cars would attract buyers other than being prestigious.
And to my surprise, all the range of the cars was devoted to promoting a hybrid motor effectiveness with automatic decision making and least expectable fuel per kilometre.
But all the cars are still promoted with horsepower and fuel liter spent per kilometre. This tells the story.
The open questions about batteries production, effectiveness and utilization are open for the leaders and waiting for promised answers.
Same as cold fusion, there are many technologies that are so common today, that have started from a concept and made their first breakthroughs for concept proof for decades.
Number, Letter, Note: Know, Think, Dream.