Nvidia’s sales of the computing chips powering the artificial intelligence craze surged beyond the lofty bar set by stock market analysts in a performance that may ease recent jitters about a Big Tech boom turning into a bust that topples the world’s most valuable company.

Elon Musk literally left a government job with a black eye, has seen profits at his car company sink and must worry about federal regulators disrupting his plans to unleash a fleet of driverless taxis on America's roads in the next few years.