Earlier this year, I said that Tesla was in its flop era. Now, the company is crushing it, posting its biggest gains in almost 11 years, according to Bloomberg. What a difference a few weeks make, when the stock tumbled after the glitzy-but-disappointing robotaxi event. Investors wanted to see signs of life, and they got it in the form of lower material costs, a surging energy business, and increased sales of regulatory credits to lagging automakers. They also said cheaper EVs are coming next year.