Rate the following argument fragment on its writing, argument, and language skills:
Evidence: Completely driverless cars continue to be science fiction, but with advancements in technology, the dream of driverless cars is within reach. But the obstacles of driverless cars are not as simple as just inventing one. Right now, driverless cars exist, such as Google's modified Toyota Prius. With a multitude of different sensors, including a rotating radar on the roof, this car can mimic the skill of a human. These developments have revolutionized the field of driverless cars; with the Google Car project, it is possible to have a driverless car today. But there is still room for improvement, such as safety and the driving experience, which is why development of these driverless cars should continue.

Score: 1