Tesla sales in Europe plunged for a fifth month in a row in May, a blow to investors who had hoped anger toward Elon Musk would have faded by now.

Tesla Inc. Chief Executive Officer Elon Musk has assumed oversight of sales in Europe and the US, leaving deputy and senior vice president Tom Zhu over Asia, following the high profile departure of Omead Afshar,

The company has devoted resources to autonomous driving rather than developing new models to attract car buyers.