Elon Musk's net worth of $367 billion makes him the world's richest person. His wealth is closely tied to shares of his car company, Tesla.

Energy savant Professor Vaclav Smil calculates that a 450kg lithium car battery contains about 11kg of lithium, nearly 14kg of cobalt, 27kg of nickel, more than 40kg of copper and 50kg of graphite, as well as about 181kg of steel, aluminium and plastics.

Musk had quieted his harsh criticism of Trump and the legislation the week after his departure from government May 30. But he blasted the bill again on June 28 less than an hour before the Senate was prepared to hold a critical vote to begin debate.