Tesla sales plunged by more than half last month in several European countries in a sign that Elon Musk could struggle to revive the company after he shifts from his Washington cost-cutting work to day-to-day operations again.

In a move that stunned environmental advocates, the US Department of Justice (DOJ) under Trump dropped a high-profile enforcement case on behalf of the EPA against a Louisiana rubber plant whose emissions of chloroprene, a chemical considered to be a likely carcinogen in humans, reached hundreds of students in nearby schools.