...of developing the tech to make EVs viable. They're still the best you can buy, but expensive... and the Cybertruck was a big waste. EVs sales in the US dropped 7% last quarter and 9% for Tesla.
The tech was already there for the most part. It wasn't truly pursued by other manufacturers. Same with hybrid tech overall. It was used minimally as a means to an end (lower Cafe mpg). Now that legacy automakers, along with some startups, are in the game things happened quickly.
Tesla/musk pushed the narrative, effectively, that EV was the future and the future is now now now.
They worked on things to make EV work. The supercharger network was really a huge key, and a brilliant move.
There are many EV makers now. And like every other segment, there some some that do certain things better than others. Tesla got a head start, and they have kept moving forward. But competition is always better for consumers.
I don't know that they are the best you can buy, as that depends on use case. But at this point they are a safe buy, as you pretty much know what you're getting if you but a Tesla, for better or worse.