In article ,
(robert arndt) wrote:

http://www.ufx.org/german/antiplofer.html

The big problem was that they just didn't have the materials to manage
the heat and stress they would have encountered, and didn't have
anywhere near the time or resources to develop them.

--
cirby at cfl.rr.com

Remember: Objects in rearview mirror may be hallucinations.
Slam on brakes accordingly.