Higher oil prices—back when electric vehicles were new and investors had never seen triple-digit oil prices—were once a bullish boon for both EV sales and EV manufacturers’ stock prices. Consider (TSLA) (TSLA): the EV maker’s stock fell almost 12% in May, the same month the Colonial Pipeline was hacked, disrupting gasoline supplies, and oil prices rose more than 4%. Higher oil prices helped boost Toyota Prius sales, which went from averaging roughly 140,000 a year in 2009 and 2010 to 240,000 between 2011 and 2013.