> SpaceX said that wrt. their original projected trajectory of a Mars Transfer Orbit. Since right now we're talking about something more like Ceres Transfer Orbit, the projection can change (and, as per article, astronomers are asking Elon for details to calculate it), but keep in mind one thing: space is big and empty. The chance of it hitting anything on short timescales are close to 0.
But one of the reasons I asked was not because I was worried about whether it would hit something on a short timescale (even though there is a non-zero chance it could happen). I'm aware of the vastness of space.
I was curious about what happens over 10, 10^3, 10^9, 10^12, 10^100 orbits later.