Rate the following essay on its writing, argument, and language skills:
Driverless cars seem like a wonderful idea but produce so many threats that it may not be worth it. In my opinion driverless cars are a mistake. Even though the idea is good, it is not very practical at all. Basically self-driving car manufacturers are asking drivers to trust our lives to sensors and blinking lights.

Self driving cars still rely on humans to take over when things get too difficult. Even though google has been testing automated driving systems since 2009 they still can't use them practically on the roads. What happens when you're sitting down using the heads-up displays meant to keep you busy and you start to drift off? Sure the car has noises and vibrations to wake you up, but some people are heavy sleepers that won't be woken up even by all that commotion. And even if it does wake you up it would have to be a sudden, loud noise or movement and that can induce panic causing the driver to swerve off the road. Then you have crashes, lawsuits, and injury or even death.

That is another point that must be addressed. Who is to blame when the inevitable crashes occur? Is it the driver's fault for trusting in the technology, or is it the manufacturers fault for producing systems that arent perfect enough to trust our lives with. And what about drivers who refuse to trust the systems in the first place? How will the cars react against the human element.

Many people are against these self-driving cars and will refuse to trust their lives to robots. Humans are unpredictable and often times don't pay attention to the road, or drive under the influence leaving an element of surprise that the robots have to react to in a split second. And a middle class family or even upper class might be reluctant to spend the money on the cars and systems nescessary to allow for automated driving.

Self-driving cars are not the future. Automobile deaths are decreasing every year as cars get safer and more reliable. There is no reason to introduce a new problem that will just cause more deaths and inevitably end in tradgedy. Humans should not put their lives in the hands of sensors, that's just blind stupidity. The lawsuits, cost, and having to put full trust into a computer should be proof enough.

Score: 4