You are driving down the road at almost the speed of light. And you fire a powerful laser that is attached to the front of your car.
The laser beam hits a guy standing at the side of the road and goes through his hand.
But to the guy at the road, your laser beam can't hit him, because to...
If you are the only object in the universe, what speed are you going?
Well there would be no such thing as speed because your speed is only relative to other objects. So if there is no such thing as speed, how is there a speed limit?
Let me give an example.
If you take off from Earth...