Could an improving economy and lower rates help EV companies get out of their rut?Shares of high-volatility stocks and companies that could benefit from lower interest rates had a great day today as the market anticipates a September rate cut by the Federal Reserve. Not only could interest rates be down, but there are signs the economy won't go into too deep of a recession if there is one at all.Shares of Tesla (TSLA 5.24%) jumped as much as 5.6% today, Lucid (LCID 5.86%) popped 6.2%, and Quantumscape (QS 6 ...