Summarize the following text. When you are in the driving seat of a car, you have the steering and the horn in your hands, the brake and accelerator under your feet, eyes open looking ahead, left and right. The same can be said about a motorcycle rider, with some modifications. These are all very visible. But, behind all, there is something that keeps working unseen. And that is the Central Processing Unit (CPU), your brain. CPUS are artificially intelligent machines that are programmed to do specific jobs under fixed conditions and judgements. But the human brain is intelligent by nature. It is the most sophisticated machine that is able to operate on ever-changing conditions and standards of judgement. As conditions in the traffic keep invariably changing, this virtue of sophistication of your brain must be at work when you are driving. The difference between traffic in the roads and highways and racing circuit must not be blurring inside you. Never imagine yourself to be a Michael Schumacher driving an ( F-1 ) at ( 300 mph ). Leave no room for fantasy. You must always be ready to encounter unexpected behavior from any vehicle or pedestrian. 'Keep your cool' is easy to advice but difficult to maintain. Still you must always restrain yourself because, at the end of the day, you don't want to be regarded as a killer. Now you see, the last thing that differentiates you from a computer is your conscience.