Elon Musk's Department of Government Efficiency (Doge) - set up to cut US government spending - claims to have saved, on average, more than $10bn a week since President Trump entered office. "We're talking about almost $200bn and rising fast," Trump told the BBC when talking about Mr Musk's cost-cutting drive on 23 April.

For Tesla, the quarterly financial consequences of Musk’s decision to wield the hatchet for Trump’s attack on federal jobs, public programs and civil society couldn’t be clearer. In the longer run, Tesla faces big-world challenges,