I wonder if the roadaster will crash into other debris. When the space shuttle broke up on re-entry in 2003, I crunched some numbers, and calculated some pieces of debris that were big enough would accelerated and flung into space on a 361.48 day elliptical orbit around the sun, with a close approach to earth about every 13 years, The orbit of any shuttle debris flung into space would have an orbit between roughly 4 million and 93 million miles from the sun,
I wonder what the odds are of the roadster and and shuttle debris flung out into space in 2003 colliding at any one time are, being that they both cross earth's orbit.
I wish I had the right software to model the orbital dynamics of both the roadster and any shuttle debris that thrown into solar orbit, back in 2003 and find out if there is going to be a collision between someday.
If any shuttle debris is out there orbiting the sun, there is a chance that it could collide with the roadster someday. I think that is far more probable than the roadster colliding with Earth.