It is all fun and games until your Tesla catches on fire inside your garage and then the fire department tries to put it out with water.
The grid is maxed out so it early doesn’t matter. They are trying to kill oil gas coal nuclear, so walking looks like the alternative.
Or it’s also fun and games until you go on a long trip and end up waiting an hour for a charger and then taking an hour to charge and the repeating this several times OR when you’ve decided you’ve had enough inconvenience and go to trade it in discover the trade in value is about 15% of what you paid.
On batteries how much better can they get? The answer is not much because they’re close to the limits of chemistry and physics now, BUT lithium batteries have an energy density of 0.3 kWh/kg. Gasoline has an energy density of 12.2 kWh/kg. That’s 40 times as much energy per unit weight as a lithium battery. So a 20 gallon gas tank has about 63 kg of gas in it. A lithium battery to match this would have to weigh about 2520 kg or 5,562 lb.
Uh, you didn’t read the article, did you? It’s about newer, better batteries like Lithium-Ferrous Ion batteries which DON’T catch on fire.