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Can't help but feel they have gone pretty well as far as they can, at the mo, in their invention of new ways of storing electricity. And each step along the line seems to use rarer and rarer materials.We may have to invent a better battery ?
There is a charger now that can recharge a car to full charge from 'empty' in 30 mins ...
So, we're getting there ... same as ultrasonic welding, I learnt that yonks ago, but don't hear much about it now ...
Get the feeling it will be the generations below ours that will have to tackle it. Maybe they'll build robot mining equipment and send it off to Mars, or even just the Moon, to harvest the stuff they need, if it can be found there, then remotely land em, take em off and return with their cargoes.
Tomorrows World!!
Interesting re ultrasonic welding. https://en.wikipedia.org/wiki/Ultra...l,especially for joining dissimilar materials.