Waymo's self-driving cars improve performance in California tests

Alphabet Inc's Waymo said its fleet of self-driving vehicles logged more than 600,000 miles last year on public roads in California, while rival Tesla Inc reported operating autonomous vehicles for just 550 miles on public roads since last October, according to reports released on Wednesday by the state's Department of Motor Vehicles. California requires auto companies and suppliers who test their self-driving vehicles on public roads to provide an annual compilation of miles traveled in autonom