One glance at the home page on this site will reveal the "golden age of fiberglass". The recent resurgence is barely a shadow.
Sitings are still very rare in all parts of the country.
There will of course be statistical anomalies and fiberglass rallies.
With something less than 4000 fiberglass trailers being produced annually, serving an area of 10,000,000 square miles and a population approaching a half billion souls... the prognosis is rarity for the foreseeable future.
My wife used to say... "when you're pregnant you see pregnant women everywhere!"
I just recently bought a Mustang convertible and guess what???