Science fiction is one step closer to reality in California. There is a new law allowing driverless cars in the state.
It sets safety standards, like requiring a human being to be behind the wheel to take over in case of an emergency.
But engineers say driverless cars will not be subject to what causes most crashes, human error.
Many are still skeptical.
Google created a dozen of these driverless cars.
The company says the cars will enable large-scale car sharing and reduce the demand for parking.
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