Might the SpaceX Roadster intercept any ongoing surveys?
Well I can't give a mathematically based answer. I can only tell that some man-made objects were recorded by sky surveys. E.g. the Rosetta spacecraft was marked as a newly found asteroid by the Catalina Sky survey although the error was corrected quite quickly.
Rosetta made an earth flyby at this time so it was pretty close.

The SpaceX Tesla will probably not come close to earth for quite a time and as such it probably won't show up in any survey.