I do appreciate your reply. You said Car->new, then had a means of
figuring out it was a BMW, so I'll take that as a + vote (not literally,
of course).
Got your caution about circular dependancies. This seems at least to be
a limited breach of said contract. Just call Car->new once,
then forevermore know that the returned object is typed according to
your specifications. No harm in that? <grin>
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