California threatens legal action against Uber unless it halts self-driving cars

Threat from the attorney general came shortly after Uber declared it would defy state regulations, a move the company said as 'an important issue of principle'

California's attorney general Kamala Harris on Friday threatened legal action against the ride-sharing tech company Uber unless it "immediately" removes its self-driving from the roads in San Francisco.

The threat from the office of the outgoing attorney general was contained in a letter released to the public Friday shortly after Uber declared it would defy state regulations, a move the company said was "an important issue of principle".