Billionaire Musk warns that the U.S. government is on the fast track to default on its debt and going bankrupt。The total U.S. national debt is still accelerating after a record $35 trillion a few weeks ago, the report said.。Musk: U.S. government spending on interest payments on the national debt breaks the $1 trillion mark, has exceeded the Defense Department budget like a person owes too much credit card debt, will not have a good ending。