Rate the following argument fragment on its writing, argument, and language skills:
Rebuttal: A variety of car companies have and are developing safety devices to assure the safety of everyone. GM has developed drivers seats that vibrate when the vehicle is in danger of backing into an object. The Google car simply announces when the driver should be prepared to take over. Other options under consideration are flashing lights on the windshield and other heads-up displays. Automakers and manufacturers are assuring your safety while deveopling the future.

Score: 2