Car "Washed in the Wash"

I do not know the story of this car which I discovered in a "desert wash" near Cortaro AR.  Washes are places where accumulating water from desert storms high up in the mountains can silently accumulate and suddenly whip across the road carrying whomever and "whatever" to unexpected oblivion.  For this reason the roads approaching where a wash crosses the road on a downgrade usually have signs similar to Railroad Crossings saying something like 'CAREFULL APPROACHING THE WAS".  And one had better!!