> Gasoline may be a lot more energy dense, but ICE are about 20% to 40% efficiency while electric motors are about 60% - 80% efficient. You are correct about e

> Gasoline may be a lot more energy dense, but ICE are about 20% to 40% efficiency while electric motors are about 60% - 80% efficient. You are correct about energy efficiency of ICE vs electric motor efficiency. > So the differences aren't as great as you might think. https://en.wikipedia.org/wiki/Energy_density https://en.wikipedia.org/wiki/Energy_density +-----------------------------+-------------+------------------+-------------------+ | * | Gasoline | Li-ion Batteries | Gasoline Multiple | +-----------------------------+-------------+------------------+-------------------+ | Gravimetric Density (MJ/kg) | 0.59 – 1.06 | 46.4 | 56.5x | | Volumetric Density (MJ/L) | 1.74 – 2.83 | 34.2 | 15.5x | +-----------------------------+-------------+------------------+-------------------+ Gasoline weighs ~50x less and takes 15x less volume for the same energy in a battery. There is only so much electrical energy that can be jammed in metals that form batteries. Chemical energy in C-C or C-H bonds is so much more dense. https://chem.libretexts.org/Bookshelves/Physical_and_Theoretical_Chemistry_Textbook_Maps/Supplemental_Modules_(Physical_and_Theoretical_Chemistry)/Chemical_Bonding/Fundamentals_of_Chemical_Bonding/Bond_Energies https://chem.libretexts.org/Bookshelves/Physical_and_Theoret... In a similar paradigm, fusion energy is 20-100 million times more dense than gasoline. https://climate.mit.edu/explainers/fusion-energy https://climate.mit.edu/explainers/fusion-energy --- We have so much science and engineering to do to truly be masters of energy and intelligence.