Electric car battery prices are starting to go back down after a temporary rise along with inflation. And it looks like they are going back down faster than expected, according to new data from Goldman Sachs. The EV revolution was enabled by lithium battery prices dropping significantly over two decades, but the trend was broken over the last few years, with prices actually going up amid a spike in the cost of some metals and general inflation. Now, we are going back to a price drop and potentia...