Self-driving car pulled over in San Francisco, confounding police. 'Ain't nobody in it.' - USA TODAY

License and registration? The first words police officers use weren't applicable when San Francisco police pulled over a car without a person inside.

"License and registration." The first words many police officers use when pulling over a vehicle weren't applicable last week when San Francisco police pulled over – or attempted to pull over – an a… [+1824 chars]

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