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What evidence is there that nothing is faster than the speed of light?

Just because nothing has ever been recorded as going faster than the speed of light is not good enough proof for me. Why is it so commonly accepted as a fact?

The answer lies in the explanation of the theory of relativity. Let's see if I can explain. Two cars are traveling along each other. A car traveling at 10 km / h while the other travels at 20 km / h. Compared to a viewer, they seem to move to 10 and 20 km / h, respectively. The slowdown in the car, however, saw the second car traveling at 10 km / h relative to its own rhythm. This is the part of relativity theory. You see, everything in physics must be respected by some frames of reference. According viewer reference image, the second car is moving 20 km / h, while in the first car in the frame of reference, the second moves at 10 km / h. This logic, until you start dealing with the speed of light. You see, the light will always be Travel at the same speed, whatever you reference the view you've probably heard people question what would happen if you had a car traveling at side of the speed of light and turned his headlights. It is the same as if it was stationary. That's the key. You see if a massive object was able to travel at the speed of light, or even faster, in fact, then the same should apply. No matter how fast you are moving, if you saw this object Lightspeed, he would still be moving at the speed of light. So if you Increase your speed infinitely close to the speed of light, the object still seems to move at the speed of light. This, in itself, defies all the laws of physics. Because the object has a mass, such an event would require an infinite amount of energy to put into it (an amount infinite force on a finite time or a finite amount of force on an infinite time). Now you ask how we know this is true. Well, there were many experiments on the speed of light. Physicists used to think that light behaves like everything else, if we were going faster, it seems slower, but this is not the case. Many experiments with very sensitive equipment have shown that no matter how fast we travel, the light appears always move at the same speed. We then have no choice but to accept Einstein's theories, because they are the only ones that explain the evidence we have. Hope this helps.