On 11 Sep 2005 15:58:58 -0700, "EAA TC 1441"
wrote:

Zoche had displayed his radial Diesels at Oshkosh for some twenty
years.They were extremely smooth running two stroke turbocharged single
or twin row configurations. Compact, light, and well designed. Zoche
was most likely ahead of the market.
See back issues of Sport Aviation.
Don Black

I think Zoche was the origional inventor of vaporware.