Rate the following argument fragment on its writing, argument, and language skills:
Evidence: I think that a lot of people are judging driverless cars by the way they are working now. We shouldn't give up on them so soon; Scientific discoveries happen all the time. Someone will find something that completely changes driverless cars for the better. Besides, they already show so much promise. In test drives, these cars could survive more than half a million miles without a crash. Mercedes Benz, Audi, and Nissan plan to have driverless cars by 2020. Let's wait until then to judge driverless cars.

Score: 2