Spring Maintenance - Guidance Needed

I say, go buy a Ferrari Enzo and drain all the fluids (brake, transmission, oil, coolant, AC, windshield wiper fluid, everything) and put it in a giant "space bag". In about 70 years it will be worth like a billion dollars, lol. A mint Porsche boxster in 70 years, maybe 100 grand. If we still have highways by then