Rate the following essay on its writing, argument, and language skills:
When one thinks of cars, or any vehicle, one may assume a driver is a primary necesity for the operation of such.

Automakers are changing that.

As technology advances, new opprotunity arrives on several fronts.

One of these opportunities is the possibility of a driverless vehicle.

This concept comes with its fair share of hurdles to overcome, however it can be made into something great for both commuters and the environment.

Driverless vehicles have the capability of doing more than simply getting occupants from point A to B.

They can reduce accidents.

Because of the computerization of these vehicles, there can be less margin of error than a human driver may be able to provide.

Autonomous vehicles can also help the environment.

Driving patterns and behaviors affect a vehicle's overall emissions.

Since these vehicles are electronically controlled, they can be pre-programmed with the most efficient methods of driving.

For those who are wary of these new vehicles, there is no need to fear.

Driverless vehicles can be built such that a human can take full control of them when the driver sees fit, or when the vehicle itself is not apt to handle the situation.

These cars can certianly change the way we get around, but it is also evident that driverless vehicles can bring more benefits.

They are capable of reducing accidents and emissions, both of which will help us as a whole.

Autonomous vehicles can also turn control over to humans when necesarry or when convenient.

Car manufacturers such as Tesla, Audi, Mercedes-Benz, and Nissan are already in the development stages of such vehicles.

Software designers such as google are working on the computer related aspects of this engineering feat.

It can be concluded that we would all benefit from putting these vehicles on the road, and, for once, taking our hands off of the wheel.

Score: 4