Fred,
I concede.
I will try to pay attention.
I will try to pay attention.
I will try to pay attention.
I will try to pay attention.
I will try to pay attention.
But, if it exists, I think the Vespa qualifies. Did you check out the link? It looks like a really clever engine.
I think the Aprilia VDue (sp) actually went into production but was withdrawn because of fuel injection problems.
Ron.