Bullish on EV stocks like Rivian? This statistic suggests you may be right.EV stocks have had a rough year. Rivian (RIVN 2.87%) shares, for example, are down by 40% since 2024 began. Tesla's stock price, meanwhile, has fallen by more than 10%, wiping out roughly $70 billion in value.There are several reasons for the decline in valuations. But if you're still bullish on EV stocks long term, there's one statistic that you should know about. It's perhaps the biggest reason why investors shouldn't abandon EV st ...