Just to show my age, I remember driving cars with Bakerlite steering wheels and other various car parts made of bakerlite. I don't think that rots either.
FYI, the grandson of the inventor of Bakelite killed his mother and later tried to kill his grandmother. If you are interested, you should look it up - it's a fascinating story of a disturbed, privileged son and an over-indulgent mother who had mental problems of her own.
Rawley's teeth should still be there if not bones.
That is, if he had teeth.
Bakelite is a thermoset plastic and very sturdy. It was used for phones, radios, jewelry, purses, and all variety of other things. It's highly collectible now.
I wonder what would be left of a car after 60 years in the ground - plastic, aluminum, lead, chrome flakes? The glass would probably still be there although it's likely broken up.
I think there would be some portions of big heavy parts too - things like engine block and crankshaft as well as some differential parts.