The metals in the are likely to sublimate significantly over the course of tens of thousands of years. Plastics and rubber might only last decades. Painted surfaces might survive longer than exposed metals.

The glass will eventually become clouded and discoloured due to radiation damage and scoring by micrometeorites. Some plastics can rapidly deteriorate in sunlight.

Erosion from micrometeoroids (dust) and larger impacts is also a factor over timescales of thousands of years.

I doubt it will last the millions of years that is suggested.

http://www.dtic.mil/dtic/tr/fulltext/u2/266548.pdf