Andy Dingley wrote:

http://www.priups.com/

interesting, but site seems down at the moment

I was reading up on http://en.wikipedia.org/wiki/Hybrid_Synergy_Drive at
the weekend, the planetary gear/engine/motor/generator arrangement seems
quite clever

nice simulator at
http://www.wind.sannet.ne.jp/m_matsu...=en?Country=GB