The Selematic appears to be the work of a truly deranged mind. Here's a page on it with a link to a patent application with exploded drawings:
http://www.disraeligears.co.uk/
It is neither electric nor automatic, being purely mechanical, controlled from a wishbone thumb shifter mounted on the handlebar via what looks like a push/pull arrangement communicated through a wire and appears to embody the worst possible way to attempt an indexing drivetrain. More photos here:
http://picasaweb.google.com/
Kurt Sperry Bellingham Washington USA
2009/6/16 Louis Schulman <louiss@gate.net>:
> Hi gang,
>
> Can someone explain this Simplex derailleur listed on German eBay? Is it
> electric? Automatic transmission?
>
> Simplex Selematic 5 - eBay (item 370213820833 end time Jun-17-09 09:33:09
> PDT).
>
> Thanks,
>
> Louis Schulman
> Tampa, Florida USA