http://www.cnwmr.com/nss-folder/automotiveenergy
there is the link to the study that George SSSS posted about.
I just downloaded the big 500k spreadsheet, which is new. the study tracks the energy consumed in the making, designing, using, and disposing of a typical vehicle based on typical life-span and other things. its incredibly thorough in its inclusions - it includes miles driven by engineers, etc.
But i'm not entirely sure what it means. For example, the costs are extremely high in overall dollars, and in dollars per mile, and i don't think this can be directly correlated to oil consumption or whatever. perhaps this is up the alley of one of you folks.
but, yes, the prius's estimated cost/mile is $3.25-$4.08
The H2s is $3.03 to $3.38
those are the low-estimates to the high-estimates.
but before we celebrate too much and publicize this report and its results, know that the jeepers creepers crowd has it way over us hummerdingers - the Wrangler is bone-cheap, at $0.60 to $0.80. that's like the third lowest vehicle on the planet. The H2 is more like 200th.