I have two cars, one inherited, the other a long term project I won't be getting to for a while. There is space in the yard to park them nicely out of the way and basically out of sight. Its a dirt/moss/grass surface.

Can anybody recommend a good cheap way to prepare the surface to park the cars over? I don't want to park them on bare dirt and grass for rust reasons, I was thinking about buying some gravel or plywood and making a space, any suggestions?

The idea is to try and keep the rusting down while they sit out there.

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