agreed (or at least if we add in subjective value) -- which is why the entire naming-of-a-law or calling them tendencies for one type to drive out another is silly. 

There _is_ no Gresham. It's just law of demand

denlillaapan

econ

MONEY CLASS OF THE DAY: Sir Thomas Gresham and the Economic Law He Didn't Make

Using your car example, if for some reason I owed you an unspecified car, then clearly I'm going to give you the worst car I own.

There's nothing more here than a basic application of marginal utility theory.