Elon Musk has long railed against the U.S. government, saying numerous investigations and safety programs have stymied Tesla, his electric car company, and its efforts to create fleets of robotaxis and other self-driving automobiles.

In January, sales of Tesla cars slumped across five European countries – the UK, France, Sweden, Norway and the Netherlands. Sales were down too in California – the US state with the largest car market. And according to at least one survey, Musk and his politics could be a significant part of the problem.