I thought Engineering Explained did a good job of explaining energy density of both gasoline and battery capacity. This video also gives a good insight of the technical and the economics challenges Electric vehicles face and why it makes good sense to continue to improve the Internal Combustion engine.
Lwiddis wrote: Why would you propose to continue to improve only one?
IMO it makes good sense to continue improvement of both.
That's a good point. In the early 1900's electric and gasoline vehicles were common. Then the gas engine won and manufacturers concentrated on improving the engines.
I wonder what would have happened if they had concentrated on improving batteries? I know the technology was not available at that time. I guess the same can be said for nuclear powered aircraft?