Rate the following argument fragment on its writing, argument, and language skills:
Evidence: Multiple car companies are working on cars that drive themselves. Tesla claimes that they will release a car capable of driving on autopilot 90% of the time by 2016. Also Mercedes-Benz, Audi, and Nissan plan to have cars that can drive themselves by 2020.

Google has had cars that have been on the road independently since 2009. Their cars have driven more than half a million miles without a crash, so far. Google cars arn't truly independent, they are required to have a person in the car to take the wheel in case of simply pulling in or out of a driveway or complicated traffic issues.

Score: 1