Can one (or some) coming from God only know where (no disrespect meant), sling around some star(s), planet(s), moon(s) and end up traveling at google speeds?
Thus arriving at their ultimate destination sooner than anyone might expect?
Hmmm . . . Have to ask the resident astronomers here for a complete explanation, but all asteroids definitely do not travel at the same speed relative to Earth, though I think there are correlations between their speeds and their origin. For instance, asteroids coming in from the asteroid belt between Mars and Jupiter come in relatively slowly (though God help us if a big one ever smacks into us!), whereas asteroids and comets coming in from further out in the solar system, or even interstellar space, tend to be moving quite a bit faster.