This is off topic but I started thinking about it when the speed of light was mentioned. As far as we know, nothing moves faster than the speed of light. How about gravity? If, hypothetically the sun vanished at this instant, would the pull of gravity it exerts on us cease instantly or would it take eight minutes as light would?
It would take 8 minutes. As I recall this has been demonstrated to be true by observations of the moons of Jupiter.
The "speed of light" isn't comparable to a speed limit on a highway. It is a fact about the nature of the thing called spacetime.