So a doubling in efficiency is not a note worthy change in 20 years? Certainly the change in emissions in that same time has been very marked. If EV double the range or halve the weight in the next 20 years that’s a pretty significant improvement towards making them very viable and incidentally a 1000Km range becomes viable.
The point is there is now an incentive to solve the battery density problem and a lot of people are now investing in research as there is money to be made.
I didn't say it wasn't noteworthy, what I meant was it's not the "eureka" moment EV evangelists claim it to be. Efficiency and design are two different things. My take on what you wrote was you were claiming the engine and technology had changed in a way that could be considered significant. It hasn't.
Valves, ports, cylinders, pistons etc etc, all the same as they were close to 100 years ago.
The 767 planes of today use the same principles of engineering the Wright brothers used. The materials have changed, the propulsion has changed, the efficiency has changed - the basic design has not.
Halving the weight - well unless they can sort out the heat dissipation problem smaller chemical batteries will produce while stationary, it's all moot. Can't make the car out of aluminium for safety purposes - carbon fibre while stronger is ludicrously expensive, so you're stuck with steel and the obsession with SUV sized vehicles for no good bloody reason other than the stupid belief they are safer, until it hits another SUV, or the driver is more reckless because they think they are in a tank.
Chemistry is chemistry and the only way to get a more energetic reaction and release of energy is to use more volatile chemistry, and we've gone full circle back to exploding batteries.
Chemistry is not a new science and there's little if any "new" ways to make a chemical reaction, so unless they find a new element to mess around with - I think we're not going to be making any big leaps in chemical batteries anytime soon.
I think the EV system is a dead end for widespread domestic use let alone industrial haulage etc, both technologically and infrastructure wise - the world has a power shortage as it is and pretty sure I read there was talk of rationing power in some places even more than already happens with "brown outs".
If I was a venture capitalist I'd be putting money into hydrogen power research. Simpler, cheaper, plentiful, zero infrastructure changes thus saving the planet TRILLIONS, and energetic enough to power planes and large shipping.