Donald Trump versus Elon Musk feud has hogged all the limelight. The US President and Tesla chief have at loggerheads since the last week.

Elon Musk’s bitter falling-out with President Trump could be costly for Tesla. As long as he is persona non grata in the Trump administration, Mr. Musk, the chief executive of Tesla, will struggle to persuade Republicans not to gut climate policies worth billions of dollars to the electric car and battery company.