And finally, if the death knell of series hybrid hasn't been heard loudly enough, here then is an actual example of an engine tuned for the task that cannot beat my 15 year old saturn for peak bsfc...
As well as these guys reporting best observed bsfc of a ~235g/kwh gasser which beats my saturn of < 250 by maybe 4% but doesn't come close to a tdi @~195g/kwh being about 20% away.
"I have seen 235 g/KWH on a 625cc per cylinder direct injection (piezo spray guided) Spark ignition engine running at Lambda=1 at best point. Injects at about 200 bar pressure. Engine also has twin cam phasing. 11.3:1 CR."
http://www.eng-tips.com/viewthread.c...185833&page=13