Rate the following essay on its writing, argument, and language skills:
Driverless cars is a goal that car companies want to make possible. So far, much progress has been made and it seems achievable, but should driverless cars be used? In the article "Driverless Cars Are Coming," the author presents both positive and negative aspects of driverless cars. Even though driverless cars are being produced successfully and are something many people would want, they should not be continued to be developed.

There are more downsides to having driverless cars than there are benefits. In order to use smarter cars, smarter roads may be necessary; however, changing the roads would be cost too much. In paragraph 3, the author states, "...they required massive upgrades to existing roads, something that was smiply too expensive to be practical." Because a driver is still necessary for a driverless car, another downside is that when an accident occurs, manufacturers will blame the driver, but the driver will shift the blame on the manufacturer. Paragraph 9 states, "If technology fails and someone is injured, who is at fault--the driver or the manufacturer?" These are reasons why driverless cars should not be continued to be produced.

In the article, positive points about driverless cars are also given. Google has developed driverless cars that have yet to be in an accident. Paragraph 2 states, "Their cars have driven more than half a million miles without a crash..." However, these cars that have not crashed still have the assistance of a human driver.

Although driverless cars seem to reduce the amount of accidents, a human driver is still necessary to avoid these crashes. The point of a driverless car is to

let the former driver not have to drive anymore, hence the word "driverless." Paragraph 8 asks, "Why would anyone want a driverless car that still needs a driver?" If these cars still need a driver to steer the car to avoid accidents, then the driver might as a well be driving the whole time. The number of accidents will not be reduced if a driver is still in control of the wheel because drivers are the reason that accidents occur in the first place. If the possibility of human error is still part of the equation, then the number of accidents will not decrease from having driverless cars.

Driverless cars are not as good as they seem. Smarter roads may have to be created in order to use smarter cars, but that is too expensive. If a driverless car were involved in an accident, drivers and manufacturers would endlessly shift the blame on each other. The number of accidents using driverless cars seem to be reduced, but a driver is still needed to avoid these accidents. This is why driverless cars should not be continued to be produced.

Score: 4